afda4c295b
This patch addresses the signed/zero extension of poison by using a poison value of the extended type instead of a constant zero of the extended type.
227 lines
10 KiB
LLVM
227 lines
10 KiB
LLVM
;; Tests that extending poison results in poison.
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;; Also tests that there are no redundant instructions loading 0 into argument registers for unused arguments.
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; REQUIRES: asserts
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; REQUIRES: asserts
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; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff -debug-only=isel \
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; RUN: %s -o - 2>&1 | FileCheck --check-prefix=CHECKISEL32 %s
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; RUN: llc -verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff -debug-only=isel \
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; RUN: %s -o - 2>&1 | FileCheck --check-prefix=CHECKISEL64 %s
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; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff -filetype=asm \
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; RUN: %s -o - 2>&1 | FileCheck --check-prefix=CHECKASM32 %s
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; RUN: llc -verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff -filetype=asm \
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; RUN: %s -o - 2>&1 | FileCheck --check-prefix=CHECKASM64 %s
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define void @bar32(i32 zeroext %var1, i32 noundef zeroext %var2) local_unnamed_addr {
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entry:
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tail call void @foo32(i32 noundef zeroext %var2)
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ret void
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}
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declare void @foo32(i32 noundef zeroext) local_unnamed_addr
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define void @test32() local_unnamed_addr {
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entry:
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tail call void @bar32(i32 zeroext poison, i32 noundef zeroext 255)
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ret void
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}
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; CHECKISEL32: Initial selection DAG: %bb.0 'test32:entry'
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; CHECKISEL32-NEXT: SelectionDAG has 18 nodes:
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; CHECKISEL32-NEXT: t1: i32 = GlobalAddress<ptr @bar32> 0
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; CHECKISEL32-NEXT: t7: i32 = Register $r1
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; CHECKISEL32-NEXT: t0: ch,glue = EntryToken
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; CHECKISEL32-NEXT: t6: ch,glue = callseq_start t0, TargetConstant:i32<56>, TargetConstant:i32<0>
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; CHECKISEL32-NEXT: t9: ch,glue = CopyToReg t6, Register:i32 $r3, poison:i32
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; CHECKISEL32-NEXT: t11: ch,glue = CopyToReg t9, Register:i32 $r4, Constant:i32<255>, t9:1
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; CHECKISEL32-NEXT: t15: ch,glue = PPCISD::CALL_NOP t11, MCSymbol:i32, Register:i32 $r3, Register:i32 $r4, Register:i32 $r2, RegisterMask:Untyped, t11:1
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; CHECKISEL32-NEXT: t16: ch,glue = callseq_end t15, TargetConstant:i32<56>, TargetConstant:i32<0>, t15:1
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; CHECKISEL32-NEXT: t17: ch = PPCISD::RET_GLUE t16
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; CHECKASM32: .test32:
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; CHECKASM32-NEXT: # %bb.0: # %entry
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; CHECKASM32-NEXT: mflr 0
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; CHECKASM32-NEXT: stwu 1, -64(1)
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; CHECKASM32-NEXT: li 4, 255
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; CHECKASM32-NEXT: stw 0, 72(1)
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; CHECKASM32-NEXT: bl .bar32
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; CHECKASM32-NEXT: nop
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; CHECKASM32-NEXT: addi 1, 1, 64
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; CHECKASM32-NEXT: lwz 0, 8(1)
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; CHECKASM32-NEXT: mtlr 0
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; CHECKASM32-NEXT: blr
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; CHECKISEL64: Initial selection DAG: %bb.0 'test32:entry'
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; CHECKISEL64-NEXT: SelectionDAG has 20 nodes:
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; CHECKISEL64-NEXT: t1: i64 = GlobalAddress<ptr @bar32> 0
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; CHECKISEL64-NEXT: t2: i32 = poison
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; CHECKISEL64-NEXT: t3: i32 = Constant<255>
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; CHECKISEL64-NEXT: t7: i64 = Register $x1
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; CHECKISEL64-NEXT: t0: ch,glue = EntryToken
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; CHECKISEL64-NEXT: t6: ch,glue = callseq_start t0, TargetConstant:i64<112>, TargetConstant:i64<0>
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; CHECKISEL64-NEXT: t11: ch,glue = CopyToReg t6, Register:i64 $x3, poison:i64
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; CHECKISEL64-NEXT: t13: ch,glue = CopyToReg t11, Register:i64 $x4, Constant:i64<255>, t11:1
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; CHECKISEL64-NEXT: t17: ch,glue = PPCISD::CALL_NOP t13, MCSymbol:i64, Register:i64 $x3, Register:i64 $x4, Register:i64 $x2, RegisterMask:Untyped, t13:1
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; CHECKISEL64-NEXT: t18: ch,glue = callseq_end t17, TargetConstant:i64<112>, TargetConstant:i64<0>, t17:1
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; CHECKISEL64-NEXT: t19: ch = PPCISD::RET_GLUE t18
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; CHECKASM64: .test32:
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; CHECKASM64-NEXT: # %bb.0: # %entry
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; CHECKASM64-NEXT: mflr 0
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; CHECKASM64-NEXT: stdu 1, -112(1)
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; CHECKASM64-NEXT: li 4, 255
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; CHECKASM64-NEXT: std 0, 128(1)
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; CHECKASM64-NEXT: bl .bar32
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; CHECKASM64-NEXT: nop
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; CHECKASM64-NEXT: addi 1, 1, 112
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; CHECKASM64-NEXT: ld 0, 16(1)
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; CHECKASM64-NEXT: mtlr 0
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; CHECKASM64-NEXT: blr
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define void @bar8(i8 zeroext %var1, i8 noundef zeroext %var2) local_unnamed_addr {
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entry:
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tail call void @foo8(i8 noundef zeroext %var2)
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ret void
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}
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declare void @foo8(i8 noundef zeroext) local_unnamed_addr
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define void @test8() local_unnamed_addr {
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entry:
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tail call void @bar8(i8 zeroext poison, i8 noundef zeroext 255)
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ret void
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}
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; CHECKISEL32: Initial selection DAG: %bb.0 'test8:entry'
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; CHECKISEL32-NEXT: SelectionDAG has 20 nodes:
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; CHECKISEL32-NEXT: t1: i32 = GlobalAddress<ptr @bar8> 0
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; CHECKISEL32-NEXT: t2: i8 = poison
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; CHECKISEL32-NEXT: t3: i8 = Constant<-1>
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; CHECKISEL32-NEXT: t9: i32 = Register $r1
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; CHECKISEL32-NEXT: t0: ch,glue = EntryToken
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; CHECKISEL32-NEXT: t8: ch,glue = callseq_start t0, TargetConstant:i32<56>, TargetConstant:i32<0>
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; CHECKISEL32-NEXT: t11: ch,glue = CopyToReg t8, Register:i32 $r3, poison:i32
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; CHECKISEL32-NEXT: t13: ch,glue = CopyToReg t11, Register:i32 $r4, Constant:i32<255>, t11:1
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; CHECKISEL32-NEXT: t17: ch,glue = PPCISD::CALL_NOP t13, MCSymbol:i32, Register:i32 $r3, Register:i32 $r4, Register:i32 $r2, RegisterMask:Untyped, t13:1
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; CHECKISEL32-NEXT: t18: ch,glue = callseq_end t17, TargetConstant:i32<56>, TargetConstant:i32<0>, t17:1
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; CHECKISEL32-NEXT: t19: ch = PPCISD::RET_GLUE t18
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; CHECKASM32: .test8:
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; CHECKASM32-NEXT: # %bb.0: # %entry
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; CHECKASM32-NEXT: mflr 0
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; CHECKASM32-NEXT: stwu 1, -64(1)
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; CHECKASM32-NEXT: li 4, 255
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; CHECKASM32-NEXT: stw 0, 72(1)
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; CHECKASM32-NEXT: bl .bar8
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; CHECKASM32-NEXT: nop
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; CHECKASM32-NEXT: addi 1, 1, 64
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; CHECKASM32-NEXT: lwz 0, 8(1)
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; CHECKASM32-NEXT: mtlr 0
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; CHECKASM32-NEXT: blr
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; CHECKASM64: .test8:
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; CHECKASM64-NEXT: # %bb.0: # %entry
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; CHECKASM64-NEXT: mflr 0
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; CHECKASM64-NEXT: stdu 1, -112(1)
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; CHECKASM64-NEXT: li 4, 255
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; CHECKASM64-NEXT: std 0, 128(1)
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; CHECKASM64-NEXT: bl .bar8
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; CHECKASM64-NEXT: nop
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; CHECKASM64-NEXT: addi 1, 1, 112
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; CHECKASM64-NEXT: ld 0, 16(1)
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; CHECKASM64-NEXT: mtlr 0
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; CHECKASM64-NEXT: blr
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; CHECKISEL64: Initial selection DAG: %bb.0 'test8:entry'
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; CHECKISEL64-NEXT: SelectionDAG has 22 nodes:
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; CHECKISEL64-NEXT: t1: i64 = GlobalAddress<ptr @bar8> 0
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; CHECKISEL64-NEXT: t2: i8 = poison
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; CHECKISEL64-NEXT: t3: i8 = Constant<-1>
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; CHECKISEL64-NEXT: t4: i32 = poison
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; CHECKISEL64-NEXT: t5: i32 = Constant<255>
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; CHECKISEL64-NEXT: t9: i64 = Register $x1
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; CHECKISEL64-NEXT: t0: ch,glue = EntryToken
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; CHECKISEL64-NEXT: t8: ch,glue = callseq_start t0, TargetConstant:i64<112>, TargetConstant:i64<0>
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; CHECKISEL64-NEXT: t13: ch,glue = CopyToReg t8, Register:i64 $x3, poison:i64
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; CHECKISEL64-NEXT: t15: ch,glue = CopyToReg t13, Register:i64 $x4, Constant:i64<255>, t13:1
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; CHECKISEL64-NEXT: t19: ch,glue = PPCISD::CALL_NOP t15, MCSymbol:i64, Register:i64 $x3, Register:i64 $x4, Register:i64 $x2, RegisterMask:Untyped, t15:1
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; CHECKISEL64-NEXT: t20: ch,glue = callseq_end t19, TargetConstant:i64<112>, TargetConstant:i64<0>, t19:1
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; CHECKISEL64-NEXT: t21: ch = PPCISD::RET_GLUE t20
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define void @bar64(i64 zeroext %var1, i64 noundef zeroext %var2) local_unnamed_addr {
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entry:
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tail call void @foo64(i64 noundef zeroext %var2)
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ret void
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}
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declare void @foo64(i64 noundef zeroext) local_unnamed_addr
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; Function Attrs: noinline nounwind
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define void @test64() local_unnamed_addr {
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entry:
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tail call void @bar64(i64 zeroext poison, i64 noundef zeroext 255)
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ret void
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}
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; CHECKISEL32: Initial selection DAG: %bb.0 'test64:entry'
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; CHECKISEL32-NEXT: SelectionDAG has 27 nodes:
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; CHECKISEL32-NEXT: t1: i32 = GlobalAddress<ptr @bar64> 0
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; CHECKISEL32-NEXT: t3: i64 = Constant<255>
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; CHECKISEL32-NEXT: t12: i32 = Register $r1
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; CHECKISEL32-NEXT: t0: ch,glue = EntryToken
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; CHECKISEL32-NEXT: t11: ch,glue = callseq_start t0, TargetConstant:i32<56>, TargetConstant:i32<0>
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; CHECKISEL32-NEXT: t5: i32 = extract_element poison:i64, Constant:i32<1>
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; CHECKISEL32-NEXT: t14: ch,glue = CopyToReg t11, Register:i32 $r3, t5
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; CHECKISEL32-NEXT: t7: i32 = extract_element poison:i64, Constant:i32<0>
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; CHECKISEL32-NEXT: t16: ch,glue = CopyToReg t14, Register:i32 $r4, t7, t14:1
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; CHECKISEL32-NEXT: t18: ch,glue = CopyToReg t16, Register:i32 $r5, Constant:i32<0>, t16:1
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; CHECKISEL32-NEXT: t20: ch,glue = CopyToReg t18, Register:i32 $r6, Constant:i32<255>, t18:1
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; CHECKISEL32-NEXT: t24: ch,glue = PPCISD::CALL_NOP t20, MCSymbol:i32, Register:i32 $r3, Register:i32 $r4, Register:i32 $r5, Register:i32 $r6, Register:i32 $r2, RegisterMask:Untyped, t20:1
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; CHECKISEL32-NEXT: t25: ch,glue = callseq_end t24, TargetConstant:i32<56>, TargetConstant:i32<0>, t24:1
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; CHECKISEL32-NEXT: t26: ch = PPCISD::RET_GLUE t25
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; CHECKASM32: .test64:
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; CHECKASM32-NEXT: # %bb.0: # %entry
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; CHECKASM32-NEXT: mflr 0
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; CHECKASM32-NEXT: stwu 1, -64(1)
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; CHECKASM32-NEXT: li 5, 0
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; CHECKASM32-NEXT: li 6, 255
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; CHECKASM32-NEXT: stw 0, 72(1)
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; CHECKASM32-NEXT: bl .bar64
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; CHECKASM32-NEXT: nop
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; CHECKASM32-NEXT: addi 1, 1, 64
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; CHECKASM32-NEXT: lwz 0, 8(1)
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; CHECKASM32-NEXT: mtlr 0
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; CHECKASM32-NEXT: blr
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; CHECKISEL64: Initial selection DAG: %bb.0 'test64:entry'
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; CHECKISEL64-NEXT: SelectionDAG has 18 nodes:
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; CHECKISEL64-NEXT: t1: i64 = GlobalAddress<ptr @bar64> 0
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; CHECKISEL64-NEXT: t7: i64 = Register $x1
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; CHECKISEL64-NEXT: t0: ch,glue = EntryToken
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; CHECKISEL64-NEXT: t6: ch,glue = callseq_start t0, TargetConstant:i64<112>, TargetConstant:i64<0>
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; CHECKISEL64-NEXT: t9: ch,glue = CopyToReg t6, Register:i64 $x3, poison:i64
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; CHECKISEL64-NEXT: t11: ch,glue = CopyToReg t9, Register:i64 $x4, Constant:i64<255>, t9:1
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; CHECKISEL64-NEXT: t15: ch,glue = PPCISD::CALL_NOP t11, MCSymbol:i64, Register:i64 $x3, Register:i64 $x4, Register:i64 $x2, RegisterMask:Untyped, t11:1
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; CHECKISEL64-NEXT: t16: ch,glue = callseq_end t15, TargetConstant:i64<112>, TargetConstant:i64<0>, t15:1
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; CHECKISEL64-NEXT: t17: ch = PPCISD::RET_GLUE t16
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; CHECKASM64: .test64:
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; CHECKASM64-NEXT: # %bb.0: # %entry
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; CHECKASM64-NEXT: mflr 0
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; CHECKASM64-NEXT: stdu 1, -112(1)
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; CHECKASM64-NEXT: li 4, 255
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; CHECKASM64-NEXT: std 0, 128(1)
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; CHECKASM64-NEXT: bl .bar64
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; CHECKASM64-NEXT: nop
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; CHECKASM64-NEXT: addi 1, 1, 112
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; CHECKASM64-NEXT: ld 0, 16(1)
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; CHECKASM64-NEXT: mtlr 0
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; CHECKASM64-NEXT: blr
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