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[AMDGPU] Add verification for amdgcn.init.exec.from.input #128172

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Feb 23, 2025
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[AMDGPU] Add verification for amdgcn.init.exec.from.input #128172

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[AMDGPU] Add verification for amdgcn.init.exec.from.input
ro-i Feb 21, 2025
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ro-i Feb 21, 2025
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ro-i Feb 21, 2025
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ro-i Feb 21, 2025
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ro-i Feb 21, 2025
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Update llvm/test/Verifier/AMDGPU/intrinsic-amdgpu-init-exec-from-inpu…
arsenm Feb 22, 2025
bf2abb6
Update llvm/test/Verifier/AMDGPU/intrinsic-amdgpu-init-exec-from-inpu…
arsenm Feb 22, 2025
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11 changes: 2 additions & 9 deletions llvm/lib/IR/Verifier.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6370,15 +6370,8 @@ void Verifier::visitIntrinsicCall(Intrinsic::ID ID, CallBase &Call) {
break;
}
case Intrinsic::amdgcn_init_exec_from_input: {
const Value *InputVal = Call.getOperand(0);
bool InRegArgFound = false;
for (const Argument &Arg : Call.getCaller()->args()) {
if (Arg.hasInRegAttr() && &Arg == InputVal) {
InRegArgFound = true;
break;
}
}
Check(InRegArgFound,
const Argument *Arg = dyn_cast<Argument>(Call.getOperand(0));
Check(Arg && Arg->hasInRegAttr(),
"only inreg arguments to the parent function are valid as inputs to "
"this intrinsic",
&Call);
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10 changes: 1 addition & 9 deletions llvm/test/Verifier/AMDGPU/intrinsic-amdgpu-init-exec-from-input.ll
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@@ -1,5 +1,4 @@
; RUN: sed -e '/^; MARK$/,$d' %s | not llc -mtriple=amdgcn -mcpu=gfx942 2>&1 | FileCheck %s
; RUN: sed -e '1,/^; MARK$/d' %s | llc -mtriple=amdgcn -mcpu=gfx942 -filetype=null
; RUN: not llvm-as -o /dev/null 2>&1 %s | FileCheck %s

; Function Attrs: convergent nocallback nofree nounwind willreturn
declare void @llvm.amdgcn.init.exec.from.input(i32, i32 immarg) #0
Expand All @@ -18,10 +17,3 @@ define amdgpu_ps void @init_exec_from_input_fail_not_inreg(i32 inreg %a, i32 %b)
call void @llvm.amdgcn.init.exec.from.input(i32 %b, i32 0)
ret void
}
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@arsenm arsenm Feb 21, 2025

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Also test a case where it's not an argument (try one with a constant and one with an instruction)

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@ro-i ro-i Feb 21, 2025

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Thanks, I added another check for the case that the operand is an instruction!
Isn't the constant case covered by the first function?


; MARK

define amdgpu_ps void @init_exec_from_input_success(i32 inreg %a, i32 %b) {
call void @llvm.amdgcn.init.exec.from.input(i32 %a, i32 0)
ret void
}
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