derek.holloway
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99 lines
2.3 KiB
LLVM
99 lines
2.3 KiB
LLVM
; RUN: llvm-as < %s -disable-output 2>&1 | FileCheck %s -allow-empty
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; RUN: llvm-as < %s | llvm-dis > %t1.ll
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; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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; RUN: diff %t1.ll %t2.ll
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; RUN: llvm-as < %t1.ll -disable-output 2>&1 | FileCheck %s -allow-empty
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; CHECK-NOT: error
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; CHECK-NOT: warning
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define void @mixed1() {
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call void @g() ; not convergent
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call void @f() ; uncontrolled convergent
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call void @g() ; not convergent
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ret void
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}
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define void @mixed2() {
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call void @g() ; not convergent
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%t1_tok1 = call token @llvm.experimental.convergence.anchor()
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call void @f() [ "convergencectrl"(token %t1_tok1) ]
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call void @g() ; not convergent
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ret void
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}
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; convergence control token can be used on non-convergent calls,
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; but it has no effect.
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define void @mixed3() {
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%t05_tok1 = call token @llvm.experimental.convergence.anchor()
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call void @g() [ "convergencectrl"(token %t05_tok1) ]
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ret void
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}
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define void @region_nesting1(i1 %arg) convergent {
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A:
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%tok1 = call token @llvm.experimental.convergence.entry()
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%tok2 = call token @llvm.experimental.convergence.anchor()
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br label %B
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B:
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br i1 %arg, label %C, label %D
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C:
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call void @f() [ "convergencectrl"(token %tok1) ]
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ret void
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D:
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call void @f() [ "convergencectrl"(token %tok2) ]
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ret void
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}
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; Mirror image of @region_nesting1
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define void @region_nesting2(i1 %arg) {
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A:
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%tok1 = call token @llvm.experimental.convergence.anchor()
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%tok2 = call token @llvm.experimental.convergence.anchor()
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br label %B
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B:
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br i1 %arg, label %C, label %D
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C:
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call void @f() [ "convergencectrl"(token %tok2) ]
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ret void
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D:
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call void @f() [ "convergencectrl"(token %tok1) ]
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ret void
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}
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define void @loop_nesting(i1 %arg) convergent {
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A:
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%a = call token @llvm.experimental.convergence.entry()
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br label %B
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B:
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%b = call token @llvm.experimental.convergence.anchor()
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br i1 %arg, label %C, label %D
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C:
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%c = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %b) ]
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call void @f() [ "convergencectrl"(token %c) ]
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br label %B
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D:
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call void @f() [ "convergencectrl"(token %b) ]
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br i1 %arg, label %B, label %E
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E:
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ret void
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}
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declare void @f() convergent
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declare void @g()
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declare token @llvm.experimental.convergence.entry()
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declare token @llvm.experimental.convergence.anchor()
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declare token @llvm.experimental.convergence.loop()
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