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99 lines
2.6 KiB
LLVM
99 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=spec-phis < %s | FileCheck %s
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; Make sure convergent and noduplicate calls aren't duplicated.
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declare i32 @llvm.convergent(i32) #0
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declare i32 @llvm.noduplicate(i32) #1
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declare i32 @llvm.regular(i32) #2
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define i32 @test_convergent(i1 %flag, i32 %arg) #0 {
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; CHECK-LABEL: @test_convergent(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[FLAG:%.*]], label [[A:%.*]], label [[B:%.*]]
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; CHECK: a:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: b:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 7, [[A]] ], [ 11, [[B]] ]
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; CHECK-NEXT: [[SUM:%.*]] = call i32 @llvm.convergent(i32 [[P]])
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; CHECK-NEXT: ret i32 [[SUM]]
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;
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entry:
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br i1 %flag, label %a, label %b
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a:
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br label %exit
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b:
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br label %exit
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exit:
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%p = phi i32 [ 7, %a ], [ 11, %b ]
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%sum = call i32 @llvm.convergent(i32 %p)
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ret i32 %sum
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}
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define i32 @test_noduplicate(i1 %flag, i32 %arg) #1 {
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; CHECK-LABEL: @test_noduplicate(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[FLAG:%.*]], label [[A:%.*]], label [[B:%.*]]
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; CHECK: a:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: b:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 7, [[A]] ], [ 11, [[B]] ]
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; CHECK-NEXT: [[SUM:%.*]] = call i32 @llvm.noduplicate(i32 [[P]])
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; CHECK-NEXT: ret i32 [[SUM]]
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;
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entry:
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br i1 %flag, label %a, label %b
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a:
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br label %exit
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b:
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br label %exit
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exit:
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%p = phi i32 [ 7, %a ], [ 11, %b ]
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%sum = call i32 @llvm.noduplicate(i32 %p)
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ret i32 %sum
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}
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; Otherwise identical function which should be transformed.
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define i32 @test_reference(i1 %flag, i32 %arg) #2 {
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; CHECK-LABEL: @test_reference(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[FLAG:%.*]], label [[A:%.*]], label [[B:%.*]]
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; CHECK: a:
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; CHECK-NEXT: [[SUM_0:%.*]] = call i32 @llvm.regular(i32 7)
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: b:
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; CHECK-NEXT: [[SUM_1:%.*]] = call i32 @llvm.regular(i32 11)
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[SUM_PHI:%.*]] = phi i32 [ [[SUM_0]], [[A]] ], [ [[SUM_1]], [[B]] ]
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; CHECK-NEXT: ret i32 [[SUM_PHI]]
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;
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entry:
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br i1 %flag, label %a, label %b
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a:
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br label %exit
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b:
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br label %exit
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exit:
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%p = phi i32 [ 7, %a ], [ 11, %b ]
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%sum = call i32 @llvm.regular(i32 %p)
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ret i32 %sum
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}
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attributes #0 = { nounwind readnone convergent speculatable }
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attributes #1 = { nounwind readnone noduplicate speculatable }
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attributes #2 = { nounwind readnone speculatable }
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