191 lines
4.5 KiB
LLVM
191 lines
4.5 KiB
LLVM
; Test all condition-code masks that are relevant for CRJ.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i32 @foo()
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@g1 = dso_local global i16 0
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define dso_local void @f1(i32 %target) {
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; CHECK-LABEL: f1:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crje %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp eq i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define dso_local void @f2(i32 %target) {
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; CHECK-LABEL: f2:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjlh %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp ne i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define dso_local void @f3(i32 %target) {
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; CHECK-LABEL: f3:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjle %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp sle i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define dso_local void @f4(i32 %target) {
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; CHECK-LABEL: f4:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjl %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp slt i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define dso_local void @f5(i32 %target) {
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; CHECK-LABEL: f5:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjh %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp sgt i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define dso_local void @f6(i32 %target) {
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; CHECK-LABEL: f6:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjhe %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp sge i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; Check that CRJ is used for checking equality with a zero-extending
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; character load.
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define dso_local void @f7(i8 *%targetptr) {
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; CHECK-LABEL: f7:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: llc [[REG:%r[0-5]]],
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; CHECK: crje %r2, [[REG]], .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%byte = load i8, i8 *%targetptr
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%target = zext i8 %byte to i32
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%cond = icmp eq i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; ...and zero-extending i16 loads.
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define dso_local void @f8(i16 *%targetptr) {
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; CHECK-LABEL: f8:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: llh [[REG:%r[0-5]]],
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; CHECK: crje %r2, [[REG]], .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%half = load i16, i16 *%targetptr
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%target = zext i16 %half to i32
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%cond = icmp eq i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; ...unless the address is a global.
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define dso_local void @f9(i16 *%targetptr) {
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; CHECK-LABEL: f9:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: clhrl %r2, g1
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; CHECK: je .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%half = load i16, i16 *@g1
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%target = zext i16 %half to i32
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%cond = icmp eq i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; Check that CRJ is used for checking order between two zero-extending
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; byte loads, even if the original comparison was unsigned.
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define dso_local void @f10(i8 *%targetptr1) {
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; CHECK-LABEL: f10:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK-DAG: llc [[REG1:%r[0-5]]], 0(
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; CHECK-DAG: llc [[REG2:%r[0-5]]], 1(
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; CHECK: crjl [[REG1]], [[REG2]], .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%targetptr2 = getelementptr i8, i8 *%targetptr1, i64 1
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%byte1 = load i8, i8 *%targetptr1
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%byte2 = load i8, i8 *%targetptr2
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%ext1 = zext i8 %byte1 to i32
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%ext2 = zext i8 %byte2 to i32
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%cond = icmp ult i32 %ext1, %ext2
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; ...likewise halfword loads.
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define dso_local void @f11(i16 *%targetptr1) {
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; CHECK-LABEL: f11:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK-DAG: llh [[REG1:%r[0-5]]], 0(
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; CHECK-DAG: llh [[REG2:%r[0-5]]], 2(
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; CHECK: crjl [[REG1]], [[REG2]], .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%targetptr2 = getelementptr i16, i16 *%targetptr1, i64 1
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%half1 = load i16, i16 *%targetptr1
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%half2 = load i16, i16 *%targetptr2
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%ext1 = zext i16 %half1 to i32
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%ext2 = zext i16 %half2 to i32
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%cond = icmp ult i32 %ext1, %ext2
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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