forked from OSchip/llvm-project
95 lines
2.4 KiB
LLVM
95 lines
2.4 KiB
LLVM
; RUN: opt < %s -gvn-sink -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -simplifycfg-sink-common=false -S | FileCheck %s
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declare i8 @ext(i1)
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define zeroext i1 @test1(i1 zeroext %flag, i32 %blksA, i32 %blksB, i32 %nblks, i8(i1)* %ext) {
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entry:
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%cmp = icmp uge i32 %blksA, %nblks
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br i1 %flag, label %if.then, label %if.else
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; CHECK-LABEL: test1
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; CHECK: call i8 @ext
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; CHECK: call i8 %ext
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if.then:
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%frombool1 = call i8 @ext(i1 %cmp)
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br label %if.end
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if.else:
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%frombool3 = call i8 %ext(i1 %cmp)
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br label %if.end
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if.end:
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%obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.else ]
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%tobool4 = icmp ne i8 %obeys.0, 0
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ret i1 %tobool4
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}
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define zeroext i1 @test2(i1 zeroext %flag, i32 %blksA, i32 %blksB, i32 %nblks, i8(i1)* %ext) {
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entry:
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%cmp = icmp uge i32 %blksA, %nblks
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br i1 %flag, label %if.then, label %if.else
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; CHECK-LABEL: test2
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; CHECK: call i8 %ext
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; CHECK-NOT: call
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if.then:
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%frombool1 = call i8 %ext(i1 %cmp)
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br label %if.end
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if.else:
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%frombool3 = call i8 %ext(i1 %cmp)
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br label %if.end
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if.end:
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%obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.else ]
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%tobool4 = icmp ne i8 %obeys.0, 0
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ret i1 %tobool4
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}
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define zeroext i1 @test3(i1 zeroext %flag, i32 %blksA, i32 %blksB, i32 %nblks, i8(i1)* %ext1, i8(i1)* %ext2) {
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entry:
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%cmp = icmp uge i32 %blksA, %nblks
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br i1 %flag, label %if.then, label %if.else
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; CHECK-LABEL: test3
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; CHECK: %[[x:.*]] = select i1 %flag, i8 (i1)* %ext1, i8 (i1)* %ext2
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; CHECK: call i8 %[[x]](i1 %cmp)
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; CHECK-NOT: call
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if.then:
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%frombool1 = call i8 %ext1(i1 %cmp)
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br label %if.end
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if.else:
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%frombool3 = call i8 %ext2(i1 %cmp)
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br label %if.end
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if.end:
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%obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.else ]
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%tobool4 = icmp ne i8 %obeys.0, 0
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ret i1 %tobool4
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}
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; Make sure no indirect call is introduced from direct calls
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declare i8 @ext2(i1)
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define zeroext i1 @test4(i1 zeroext %flag, i32 %blksA, i32 %blksB, i32 %nblks) {
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entry:
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%cmp = icmp uge i32 %blksA, %nblks
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br i1 %flag, label %if.then, label %if.else
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; CHECK-LABEL: test4
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; CHECK: call i8 @ext(
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; CHECK: call i8 @ext2(
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if.then:
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%frombool1 = call i8 @ext(i1 %cmp)
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br label %if.end
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if.else:
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%frombool3 = call i8 @ext2(i1 %cmp)
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br label %if.end
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if.end:
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%obeys.0 = phi i8 [ %frombool1, %if.then ], [ %frombool3, %if.else ]
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%tobool4 = icmp ne i8 %obeys.0, 0
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ret i1 %tobool4
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}
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