244 lines
8.0 KiB
LLVM
244 lines
8.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
|
|
; RUN: -mcpu=pwr10 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
|
|
; RUN: FileCheck %s
|
|
; RUN: llc -verify-machineinstrs -target-abi=elfv2 -mtriple=powerpc64-- \
|
|
; RUN: -mcpu=pwr10 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
|
|
; RUN: FileCheck %s
|
|
|
|
|
|
; The tests check the behaviour of PC Relative tail calls. When using
|
|
; PC Relative we are able to do more tail calling than we have done in
|
|
; the past as we no longer need to restore the TOC pointer into R2 after
|
|
; most calls.
|
|
|
|
@Func = external local_unnamed_addr global i32 (...)*, align 8
|
|
@FuncLocal = common dso_local local_unnamed_addr global i32 (...)* null, align 8
|
|
|
|
; No calls in this function but we assign the function pointers.
|
|
define dso_local void @AssignFuncPtr() local_unnamed_addr {
|
|
; CHECK-LABEL: AssignFuncPtr:
|
|
; CHECK: # %bb.0: # %entry
|
|
; CHECK-NEXT: pld r3, Func@got@pcrel(0), 1
|
|
; CHECK-NEXT: pld r4, Function@got@pcrel(0), 1
|
|
; CHECK-NEXT: std r4, 0(r3)
|
|
; CHECK-NEXT: pstd r4, FuncLocal@PCREL(0), 1
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
store i32 (...)* @Function, i32 (...)** @Func, align 8
|
|
store i32 (...)* @Function, i32 (...)** @FuncLocal, align 8
|
|
ret void
|
|
}
|
|
|
|
declare signext i32 @Function(...)
|
|
|
|
define dso_local void @TailCallLocalFuncPtr() local_unnamed_addr {
|
|
; CHECK-LABEL: TailCallLocalFuncPtr:
|
|
; CHECK: .localentry TailCallLocalFuncPtr, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: pld r12, FuncLocal@PCREL(0), 1
|
|
; CHECK-NEXT: mtctr r12
|
|
; CHECK-NEXT: bctr
|
|
; CHECK-NEXT: #TC_RETURNr8 ctr 0
|
|
entry:
|
|
%0 = load i32 ()*, i32 ()** bitcast (i32 (...)** @FuncLocal to i32 ()**), align 8
|
|
%call = tail call signext i32 %0()
|
|
ret void
|
|
}
|
|
|
|
define dso_local void @TailCallExtrnFuncPtr() local_unnamed_addr {
|
|
; CHECK-LABEL: TailCallExtrnFuncPtr:
|
|
; CHECK: .localentry TailCallExtrnFuncPtr, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: pld r3, Func@got@pcrel(0), 1
|
|
; CHECK-NEXT: .Lpcrel0:
|
|
; CHECK-NEXT: .reloc .Lpcrel0-8,R_PPC64_PCREL_OPT,.-(.Lpcrel0-8)
|
|
; CHECK-NEXT: ld r12, 0(r3)
|
|
; CHECK-NEXT: mtctr r12
|
|
; CHECK-NEXT: bctr
|
|
; CHECK-NEXT: #TC_RETURNr8 ctr 0
|
|
entry:
|
|
%0 = load i32 ()*, i32 ()** bitcast (i32 (...)** @Func to i32 ()**), align 8
|
|
%call = tail call signext i32 %0()
|
|
ret void
|
|
}
|
|
|
|
define dso_local signext i32 @TailCallParamFuncPtr(i32 (...)* nocapture %passedfunc) local_unnamed_addr {
|
|
; CHECK-LABEL: TailCallParamFuncPtr:
|
|
; CHECK: .localentry TailCallParamFuncPtr, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: mtctr r3
|
|
; CHECK-NEXT: mr r12, r3
|
|
; CHECK-NEXT: bctr
|
|
; CHECK-NEXT: #TC_RETURNr8 ctr 0
|
|
entry:
|
|
%callee.knr.cast = bitcast i32 (...)* %passedfunc to i32 ()*
|
|
%call = tail call signext i32 %callee.knr.cast()
|
|
ret i32 %call
|
|
}
|
|
|
|
define dso_local signext i32 @NoTailIndirectCall(i32 (...)* nocapture %passedfunc, i32 signext %a) local_unnamed_addr {
|
|
; CHECK-LABEL: NoTailIndirectCall:
|
|
; CHECK: .localentry NoTailIndirectCall, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: mflr r0
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 48
|
|
; CHECK-NEXT: .cfi_offset lr, 16
|
|
; CHECK-NEXT: .cfi_offset r30, -16
|
|
; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
|
|
; CHECK-NEXT: std r0, 16(r1)
|
|
; CHECK-NEXT: stdu r1, -48(r1)
|
|
; CHECK-NEXT: mtctr r3
|
|
; CHECK-NEXT: mr r12, r3
|
|
; CHECK-NEXT: mr r30, r4
|
|
; CHECK-NEXT: bctrl
|
|
; CHECK-NEXT: add r3, r3, r30
|
|
; CHECK-NEXT: extsw r3, r3
|
|
; CHECK-NEXT: addi r1, r1, 48
|
|
; CHECK-NEXT: ld r0, 16(r1)
|
|
; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
|
|
; CHECK-NEXT: mtlr r0
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
%callee.knr.cast = bitcast i32 (...)* %passedfunc to i32 ()*
|
|
%call = tail call signext i32 %callee.knr.cast()
|
|
%add = add nsw i32 %call, %a
|
|
ret i32 %add
|
|
}
|
|
|
|
define dso_local signext i32 @TailCallDirect() local_unnamed_addr {
|
|
; CHECK-LABEL: TailCallDirect:
|
|
; CHECK: .localentry TailCallDirect, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: b Function@notoc
|
|
; CHECK-NEXT: #TC_RETURNd8 Function@notoc 0
|
|
entry:
|
|
%call = tail call signext i32 bitcast (i32 (...)* @Function to i32 ()*)()
|
|
ret i32 %call
|
|
}
|
|
|
|
define dso_local signext i32 @NoTailCallDirect(i32 signext %a) local_unnamed_addr {
|
|
; CHECK-LABEL: NoTailCallDirect:
|
|
; CHECK: .localentry NoTailCallDirect, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: mflr r0
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 48
|
|
; CHECK-NEXT: .cfi_offset lr, 16
|
|
; CHECK-NEXT: .cfi_offset r30, -16
|
|
; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
|
|
; CHECK-NEXT: std r0, 16(r1)
|
|
; CHECK-NEXT: stdu r1, -48(r1)
|
|
; CHECK-NEXT: mr r30, r3
|
|
; CHECK-NEXT: bl Function@notoc
|
|
; CHECK-NEXT: add r3, r3, r30
|
|
; CHECK-NEXT: extsw r3, r3
|
|
; CHECK-NEXT: addi r1, r1, 48
|
|
; CHECK-NEXT: ld r0, 16(r1)
|
|
; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
|
|
; CHECK-NEXT: mtlr r0
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
%call = tail call signext i32 bitcast (i32 (...)* @Function to i32 ()*)()
|
|
%add = add nsw i32 %call, %a
|
|
ret i32 %add
|
|
}
|
|
|
|
define dso_local signext i32 @TailCallDirectLocal() local_unnamed_addr {
|
|
; CHECK-LABEL: TailCallDirectLocal:
|
|
; CHECK: .localentry TailCallDirectLocal, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: b LocalFunction@notoc
|
|
; CHECK-NEXT: #TC_RETURNd8 LocalFunction@notoc 0
|
|
entry:
|
|
%call = tail call fastcc signext i32 @LocalFunction()
|
|
ret i32 %call
|
|
}
|
|
|
|
define dso_local signext i32 @NoTailCallDirectLocal(i32 signext %a) local_unnamed_addr {
|
|
; CHECK-LABEL: NoTailCallDirectLocal:
|
|
; CHECK: .localentry NoTailCallDirectLocal, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: mflr r0
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 48
|
|
; CHECK-NEXT: .cfi_offset lr, 16
|
|
; CHECK-NEXT: .cfi_offset r30, -16
|
|
; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
|
|
; CHECK-NEXT: std r0, 16(r1)
|
|
; CHECK-NEXT: stdu r1, -48(r1)
|
|
; CHECK-NEXT: mr r30, r3
|
|
; CHECK-NEXT: bl LocalFunction@notoc
|
|
; CHECK-NEXT: add r3, r3, r30
|
|
; CHECK-NEXT: extsw r3, r3
|
|
; CHECK-NEXT: addi r1, r1, 48
|
|
; CHECK-NEXT: ld r0, 16(r1)
|
|
; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
|
|
; CHECK-NEXT: mtlr r0
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
%call = tail call fastcc signext i32 @LocalFunction()
|
|
%add = add nsw i32 %call, %a
|
|
ret i32 %add
|
|
}
|
|
|
|
define dso_local signext i32 @TailCallAbs() local_unnamed_addr {
|
|
; CHECK-LABEL: TailCallAbs:
|
|
; CHECK: .localentry TailCallAbs, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: li r3, 400
|
|
; CHECK-NEXT: li r12, 400
|
|
; CHECK-NEXT: mtctr r3
|
|
; CHECK-NEXT: bctr
|
|
; CHECK-NEXT: #TC_RETURNr8 ctr 0
|
|
entry:
|
|
%call = tail call signext i32 inttoptr (i64 400 to i32 ()*)()
|
|
ret i32 %call
|
|
}
|
|
|
|
define dso_local signext i32 @NoTailCallAbs(i32 signext %a) local_unnamed_addr {
|
|
; CHECK-LABEL: NoTailCallAbs:
|
|
; CHECK: .localentry NoTailCallAbs, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: mflr r0
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 48
|
|
; CHECK-NEXT: .cfi_offset lr, 16
|
|
; CHECK-NEXT: .cfi_offset r30, -16
|
|
; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
|
|
; CHECK-NEXT: std r0, 16(r1)
|
|
; CHECK-NEXT: stdu r1, -48(r1)
|
|
; CHECK-NEXT: mr r30, r3
|
|
; CHECK-NEXT: li r3, 400
|
|
; CHECK-NEXT: li r12, 400
|
|
; CHECK-NEXT: mtctr r3
|
|
; CHECK-NEXT: bctrl
|
|
; CHECK-NEXT: add r3, r3, r30
|
|
; CHECK-NEXT: extsw r3, r3
|
|
; CHECK-NEXT: addi r1, r1, 48
|
|
; CHECK-NEXT: ld r0, 16(r1)
|
|
; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
|
|
; CHECK-NEXT: mtlr r0
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
%call = tail call signext i32 inttoptr (i64 400 to i32 ()*)()
|
|
%add = add nsw i32 %call, %a
|
|
ret i32 %add
|
|
}
|
|
|
|
; Function Attrs: noinline
|
|
; This function should be tail called and not inlined.
|
|
define internal fastcc signext i32 @LocalFunction() unnamed_addr #0 {
|
|
; CHECK-LABEL: LocalFunction:
|
|
; CHECK: .localentry LocalFunction, 1
|
|
; CHECK-NEXT: # %bb.0: # %entry
|
|
; CHECK-NEXT: #APP
|
|
; CHECK-NEXT: li r3, 42
|
|
; CHECK-NEXT: #NO_APP
|
|
; CHECK-NEXT: extsw r3, r3
|
|
; CHECK-NEXT: blr
|
|
entry:
|
|
%0 = tail call i32 asm "li $0, 42", "=&r"()
|
|
ret i32 %0
|
|
}
|
|
|
|
attributes #0 = { noinline }
|
|
|