646 lines
18 KiB
LLVM
646 lines
18 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=i686-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,X86
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,X64
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; https://bugs.llvm.org/show_bug.cgi?id=38149
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; We are truncating from wider width, and then sign-extending
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; back to the original width. Then we equality-comparing orig and src.
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; If they don't match, then we had signed truncation during truncation.
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; This can be expressed in a several ways in IR:
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; trunc + sext + icmp eq <- not canonical
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; shl + ashr + icmp eq
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; add + icmp uge/ugt
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; add + icmp ult/ule
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; However only the simplest form (with two shifts) gets lowered best.
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; ---------------------------------------------------------------------------- ;
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; shl + ashr + icmp eq
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; ---------------------------------------------------------------------------- ;
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define i1 @shifts_eqcmp_i16_i8(i16 %x) nounwind {
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; X86-LABEL: shifts_eqcmp_i16_i8:
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; X86: # %bb.0:
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; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: cmpw %ax, %cx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: shifts_eqcmp_i16_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbl %dil, %eax
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; X64-NEXT: cmpw %di, %ax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = shl i16 %x, 8 ; 16-8
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%tmp1 = ashr exact i16 %tmp0, 8 ; 16-8
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%tmp2 = icmp eq i16 %tmp1, %x
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ret i1 %tmp2
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}
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define i1 @shifts_eqcmp_i32_i16(i32 %x) nounwind {
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; X86-LABEL: shifts_eqcmp_i32_i16:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movswl %ax, %ecx
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; X86-NEXT: cmpl %eax, %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: shifts_eqcmp_i32_i16:
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; X64: # %bb.0:
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; X64-NEXT: movswl %di, %eax
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; X64-NEXT: cmpl %edi, %eax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = shl i32 %x, 16 ; 32-16
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%tmp1 = ashr exact i32 %tmp0, 16 ; 32-16
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%tmp2 = icmp eq i32 %tmp1, %x
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ret i1 %tmp2
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}
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define i1 @shifts_eqcmp_i32_i8(i32 %x) nounwind {
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; X86-LABEL: shifts_eqcmp_i32_i8:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: cmpl %eax, %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: shifts_eqcmp_i32_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbl %dil, %eax
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; X64-NEXT: cmpl %edi, %eax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = shl i32 %x, 24 ; 32-8
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%tmp1 = ashr exact i32 %tmp0, 24 ; 32-8
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%tmp2 = icmp eq i32 %tmp1, %x
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ret i1 %tmp2
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}
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define i1 @shifts_eqcmp_i64_i32(i64 %x) nounwind {
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; X86-LABEL: shifts_eqcmp_i64_i32:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: sarl $31, %eax
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; X86-NEXT: xorl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: shifts_eqcmp_i64_i32:
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; X64: # %bb.0:
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; X64-NEXT: movslq %edi, %rax
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; X64-NEXT: cmpq %rdi, %rax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = shl i64 %x, 32 ; 64-32
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%tmp1 = ashr exact i64 %tmp0, 32 ; 64-32
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%tmp2 = icmp eq i64 %tmp1, %x
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ret i1 %tmp2
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}
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define i1 @shifts_eqcmp_i64_i16(i64 %x) nounwind {
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; X86-LABEL: shifts_eqcmp_i64_i16:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movswl %ax, %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: sarl $31, %edx
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; X86-NEXT: xorl %eax, %ecx
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; X86-NEXT: xorl {{[0-9]+}}(%esp), %edx
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; X86-NEXT: orl %ecx, %edx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: shifts_eqcmp_i64_i16:
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; X64: # %bb.0:
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; X64-NEXT: movswq %di, %rax
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; X64-NEXT: cmpq %rdi, %rax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = shl i64 %x, 48 ; 64-16
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%tmp1 = ashr exact i64 %tmp0, 48 ; 64-16
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%tmp2 = icmp eq i64 %tmp1, %x
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ret i1 %tmp2
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}
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define i1 @shifts_eqcmp_i64_i8(i64 %x) nounwind {
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; X86-LABEL: shifts_eqcmp_i64_i8:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: sarl $31, %edx
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; X86-NEXT: xorl %eax, %ecx
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; X86-NEXT: xorl {{[0-9]+}}(%esp), %edx
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; X86-NEXT: orl %ecx, %edx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: shifts_eqcmp_i64_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbq %dil, %rax
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; X64-NEXT: cmpq %rdi, %rax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = shl i64 %x, 56 ; 64-8
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%tmp1 = ashr exact i64 %tmp0, 56 ; 64-8
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%tmp2 = icmp eq i64 %tmp1, %x
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ret i1 %tmp2
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}
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; ---------------------------------------------------------------------------- ;
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; add + icmp uge
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; ---------------------------------------------------------------------------- ;
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define i1 @add_ugecmp_i16_i8(i16 %x) nounwind {
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; X86-LABEL: add_ugecmp_i16_i8:
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; X86: # %bb.0:
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; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: cmpw %ax, %cx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugecmp_i16_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbl %dil, %eax
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; X64-NEXT: cmpw %di, %ax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i16 %x, -128 ; ~0U << (8-1)
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%tmp1 = icmp uge i16 %tmp0, -256 ; ~0U << 8
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ret i1 %tmp1
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}
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define i1 @add_ugecmp_i32_i16(i32 %x) nounwind {
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; X86-LABEL: add_ugecmp_i32_i16:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movswl %ax, %ecx
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; X86-NEXT: cmpl %eax, %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugecmp_i32_i16:
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; X64: # %bb.0:
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; X64-NEXT: movswl %di, %eax
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; X64-NEXT: cmpl %edi, %eax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i32 %x, -32768 ; ~0U << (16-1)
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%tmp1 = icmp uge i32 %tmp0, -65536 ; ~0U << 16
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ret i1 %tmp1
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}
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define i1 @add_ugecmp_i32_i8(i32 %x) nounwind {
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; X86-LABEL: add_ugecmp_i32_i8:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: cmpl %eax, %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugecmp_i32_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbl %dil, %eax
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; X64-NEXT: cmpl %edi, %eax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i32 %x, -128 ; ~0U << (8-1)
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%tmp1 = icmp uge i32 %tmp0, -256 ; ~0U << 8
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ret i1 %tmp1
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}
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define i1 @add_ugecmp_i64_i32(i64 %x) nounwind {
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; X86-LABEL: add_ugecmp_i64_i32:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: sarl $31, %eax
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; X86-NEXT: xorl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugecmp_i64_i32:
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; X64: # %bb.0:
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; X64-NEXT: movslq %edi, %rax
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; X64-NEXT: cmpq %rdi, %rax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i64 %x, -2147483648 ; ~0U << (32-1)
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%tmp1 = icmp uge i64 %tmp0, -4294967296 ; ~0U << 32
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ret i1 %tmp1
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}
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define i1 @add_ugecmp_i64_i16(i64 %x) nounwind {
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; X86-LABEL: add_ugecmp_i64_i16:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movswl %ax, %ecx
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; X86-NEXT: xorl %ecx, %eax
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; X86-NEXT: sarl $31, %ecx
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; X86-NEXT: xorl {{[0-9]+}}(%esp), %ecx
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; X86-NEXT: orl %eax, %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugecmp_i64_i16:
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; X64: # %bb.0:
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; X64-NEXT: movswq %di, %rax
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; X64-NEXT: cmpq %rdi, %rax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i64 %x, -32768 ; ~0U << (16-1)
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%tmp1 = icmp uge i64 %tmp0, -65536 ; ~0U << 16
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ret i1 %tmp1
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}
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define i1 @add_ugecmp_i64_i8(i64 %x) nounwind {
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; X86-LABEL: add_ugecmp_i64_i8:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: xorl %ecx, %eax
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; X86-NEXT: sarl $31, %ecx
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; X86-NEXT: xorl {{[0-9]+}}(%esp), %ecx
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; X86-NEXT: orl %eax, %ecx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugecmp_i64_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbq %dil, %rax
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; X64-NEXT: cmpq %rdi, %rax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i64 %x, -128 ; ~0U << (8-1)
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%tmp1 = icmp uge i64 %tmp0, -256 ; ~0U << 8
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ret i1 %tmp1
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}
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; Slightly more canonical variant
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define i1 @add_ugtcmp_i16_i8(i16 %x) nounwind {
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; X86-LABEL: add_ugtcmp_i16_i8:
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; X86: # %bb.0:
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; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: movsbl %al, %ecx
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; X86-NEXT: cmpw %ax, %cx
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; X86-NEXT: sete %al
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; X86-NEXT: retl
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;
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; X64-LABEL: add_ugtcmp_i16_i8:
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; X64: # %bb.0:
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; X64-NEXT: movsbl %dil, %eax
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; X64-NEXT: cmpw %di, %ax
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; X64-NEXT: sete %al
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; X64-NEXT: retq
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%tmp0 = add i16 %x, -128 ; ~0U << (8-1)
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%tmp1 = icmp ugt i16 %tmp0, -257 ; ~0U << 8 - 1
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ret i1 %tmp1
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}
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; ---------------------------------------------------------------------------- ;
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; add + icmp ult
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; ---------------------------------------------------------------------------- ;
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define i1 @add_ultcmp_i16_i8(i16 %x) nounwind {
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; X86-LABEL: add_ultcmp_i16_i8:
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; X86: # %bb.0:
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|
|
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movsbl %al, %ecx
|
||
|
|
; X86-NEXT: cmpw %ax, %cx
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_i16_i8:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movsbl %dil, %eax
|
||
|
|
; X64-NEXT: cmpw %di, %ax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @add_ultcmp_i32_i16(i32 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_i32_i16:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movswl %ax, %ecx
|
||
|
|
; X86-NEXT: cmpl %eax, %ecx
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_i32_i16:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movswl %di, %eax
|
||
|
|
; X64-NEXT: cmpl %edi, %eax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i32 %x, 32768 ; 1U << (16-1)
|
||
|
|
%tmp1 = icmp ult i32 %tmp0, 65536 ; 1U << 16
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @add_ultcmp_i32_i8(i32 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_i32_i8:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movsbl %al, %ecx
|
||
|
|
; X86-NEXT: cmpl %eax, %ecx
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_i32_i8:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movsbl %dil, %eax
|
||
|
|
; X64-NEXT: cmpl %edi, %eax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i32 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i32 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @add_ultcmp_i64_i32(i64 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_i64_i32:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: sarl $31, %eax
|
||
|
|
; X86-NEXT: xorl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_i64_i32:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movslq %edi, %rax
|
||
|
|
; X64-NEXT: cmpq %rdi, %rax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i64 %x, 2147483648 ; 1U << (32-1)
|
||
|
|
%tmp1 = icmp ult i64 %tmp0, 4294967296 ; 1U << 32
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @add_ultcmp_i64_i16(i64 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_i64_i16:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movswl %ax, %ecx
|
||
|
|
; X86-NEXT: xorl %ecx, %eax
|
||
|
|
; X86-NEXT: sarl $31, %ecx
|
||
|
|
; X86-NEXT: xorl {{[0-9]+}}(%esp), %ecx
|
||
|
|
; X86-NEXT: orl %eax, %ecx
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_i64_i16:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movswq %di, %rax
|
||
|
|
; X64-NEXT: cmpq %rdi, %rax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i64 %x, 32768 ; 1U << (16-1)
|
||
|
|
%tmp1 = icmp ult i64 %tmp0, 65536 ; 1U << 16
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @add_ultcmp_i64_i8(i64 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_i64_i8:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movsbl %al, %ecx
|
||
|
|
; X86-NEXT: xorl %ecx, %eax
|
||
|
|
; X86-NEXT: sarl $31, %ecx
|
||
|
|
; X86-NEXT: xorl {{[0-9]+}}(%esp), %ecx
|
||
|
|
; X86-NEXT: orl %eax, %ecx
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_i64_i8:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movsbq %dil, %rax
|
||
|
|
; X64-NEXT: cmpq %rdi, %rax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i64 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i64 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Slightly more canonical variant
|
||
|
|
define i1 @add_ulecmp_i16_i8(i16 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ulecmp_i16_i8:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movsbl %al, %ecx
|
||
|
|
; X86-NEXT: cmpw %ax, %cx
|
||
|
|
; X86-NEXT: sete %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ulecmp_i16_i8:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movsbl %dil, %eax
|
||
|
|
; X64-NEXT: cmpw %di, %ax
|
||
|
|
; X64-NEXT: sete %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ule i16 %tmp0, 255 ; (1U << 8) - 1
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Negative tests
|
||
|
|
; ---------------------------------------------------------------------------- ;
|
||
|
|
|
||
|
|
; Adding not a constant
|
||
|
|
define i1 @add_ultcmp_bad_i16_i8_add(i16 %x, i16 %y) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i16_i8_add:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: addw {{[0-9]+}}(%esp), %ax
|
||
|
|
; X86-NEXT: movzwl %ax, %eax
|
||
|
|
; X86-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i16_i8_add:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: addl %esi, %edi
|
||
|
|
; X64-NEXT: movzwl %di, %eax
|
||
|
|
; X64-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, %y
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Comparing not with a constant
|
||
|
|
define i1 @add_ultcmp_bad_i16_i8_cmp(i16 %x, i16 %y) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i16_i8_cmp:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: subl $-128, %eax
|
||
|
|
; X86-NEXT: cmpw {{[0-9]+}}(%esp), %ax
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i16_i8_cmp:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: subl $-128, %edi
|
||
|
|
; X64-NEXT: cmpw %si, %di
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, %y
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Second constant is not larger than the first one
|
||
|
|
define i1 @add_ultcmp_bad_i8_i16(i16 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i8_i16:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movw $128, %ax
|
||
|
|
; X86-NEXT: addw {{[0-9]+}}(%esp), %ax
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i8_i16:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: addw $128, %di
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 128 ; 1U << (8-1)
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; First constant is not power of two
|
||
|
|
define i1 @add_ultcmp_bad_i16_i8_c0notpoweroftwo(i16 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i16_i8_c0notpoweroftwo:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl $192, %eax
|
||
|
|
; X86-NEXT: addl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: movzwl %ax, %eax
|
||
|
|
; X86-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i16_i8_c0notpoweroftwo:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: addl $192, %edi
|
||
|
|
; X64-NEXT: movzwl %di, %eax
|
||
|
|
; X64-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 192 ; (1U << (8-1)) + (1U << (8-1-1))
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Second constant is not power of two
|
||
|
|
define i1 @add_ultcmp_bad_i16_i8_c1notpoweroftwo(i16 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i16_i8_c1notpoweroftwo:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: subl $-128, %eax
|
||
|
|
; X86-NEXT: movzwl %ax, %eax
|
||
|
|
; X86-NEXT: cmpl $768, %eax # imm = 0x300
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i16_i8_c1notpoweroftwo:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: subl $-128, %edi
|
||
|
|
; X64-NEXT: movzwl %di, %eax
|
||
|
|
; X64-NEXT: cmpl $768, %eax # imm = 0x300
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 768 ; (1U << 8)) + (1U << (8+1))
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Magic check fails, 64 << 1 != 256
|
||
|
|
define i1 @add_ultcmp_bad_i16_i8_magic(i16 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i16_i8_magic:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: addl $64, %eax
|
||
|
|
; X86-NEXT: movzwl %ax, %eax
|
||
|
|
; X86-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i16_i8_magic:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: addl $64, %edi
|
||
|
|
; X64-NEXT: movzwl %di, %eax
|
||
|
|
; X64-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 64 ; 1U << (8-1-1)
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Bad 'destination type'
|
||
|
|
define i1 @add_ultcmp_bad_i16_i4(i16 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i16_i4:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: addl $8, %eax
|
||
|
|
; X86-NEXT: cmpw $16, %ax
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i16_i4:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: addl $8, %edi
|
||
|
|
; X64-NEXT: cmpw $16, %di
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i16 %x, 8 ; 1U << (4-1)
|
||
|
|
%tmp1 = icmp ult i16 %tmp0, 16 ; 1U << 4
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
; Bad storage type
|
||
|
|
define i1 @add_ultcmp_bad_i24_i8(i24 %x) nounwind {
|
||
|
|
; X86-LABEL: add_ultcmp_bad_i24_i8:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: subl $-128, %eax
|
||
|
|
; X86-NEXT: andl $16777215, %eax # imm = 0xFFFFFF
|
||
|
|
; X86-NEXT: cmpl $256, %eax # imm = 0x100
|
||
|
|
; X86-NEXT: setb %al
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: add_ultcmp_bad_i24_i8:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: subl $-128, %edi
|
||
|
|
; X64-NEXT: andl $16777215, %edi # imm = 0xFFFFFF
|
||
|
|
; X64-NEXT: cmpl $256, %edi # imm = 0x100
|
||
|
|
; X64-NEXT: setb %al
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%tmp0 = add i24 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ult i24 %tmp0, 256 ; 1U << 8
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @add_ulecmp_bad_i16_i8(i16 %x) nounwind {
|
||
|
|
; CHECK-LABEL: add_ulecmp_bad_i16_i8:
|
||
|
|
; CHECK: # %bb.0:
|
||
|
|
; CHECK-NEXT: movb $1, %al
|
||
|
|
; CHECK-NEXT: ret{{[l|q]}}
|
||
|
|
%tmp0 = add i16 %x, 128 ; 1U << (8-1)
|
||
|
|
%tmp1 = icmp ule i16 %tmp0, -1 ; when we +1 it, it will wrap to 0
|
||
|
|
ret i1 %tmp1
|
||
|
|
}
|