diff options
Diffstat (limited to 'test/Transforms/SCCP/ipsccp-basic.ll')
| -rw-r--r-- | test/Transforms/SCCP/ipsccp-basic.ll | 73 |
1 files changed, 67 insertions, 6 deletions
diff --git a/test/Transforms/SCCP/ipsccp-basic.ll b/test/Transforms/SCCP/ipsccp-basic.ll index 7f0772e..29d052a 100644 --- a/test/Transforms/SCCP/ipsccp-basic.ll +++ b/test/Transforms/SCCP/ipsccp-basic.ll @@ -1,13 +1,74 @@ -; RUN: opt < %s -ipsccp -S | \ -; RUN: grep -v {ret i32 17} | grep -v {ret i32 undef} | not grep ret +; RUN: opt < %s -ipsccp -S | FileCheck %s -define internal i32 @bar(i32 %A) { - %X = add i32 1, 2 ; <i32> [#uses=0] +;;======================== test1 + +define internal i32 @test1a(i32 %A) { + %X = add i32 1, 2 ret i32 %A } +; CHECK: define internal i32 @test1a +; CHECK: ret i32 undef + +define i32 @test1b() { + %X = call i32 @test1a( i32 17 ) + ret i32 %X + +; CHECK: define i32 @test1b +; CHECK: ret i32 17 +} + + + +;;======================== test2 + +define internal i32 @test2a(i32 %A) { + %C = icmp eq i32 %A, 0 + br i1 %C, label %T, label %F +T: + %B = call i32 @test2a( i32 0 ) + ret i32 0 +F: + %C.upgrd.1 = call i32 @test2a(i32 1) + ret i32 %C.upgrd.1 +} +; CHECK: define internal i32 @test2a +; CHECK-NEXT: br label %T +; CHECK: ret i32 undef + -define i32 @foo() { - %X = call i32 @bar( i32 17 ) ; <i32> [#uses=1] +define i32 @test2b() { + %X = call i32 @test2a(i32 0) ret i32 %X } +; CHECK: define i32 @test2b +; CHECK-NEXT: %X = call i32 @test2a(i32 0) +; CHECK-NEXT: ret i32 0 + + +;;======================== test3 + +@G = internal global i32 undef +define void @test3a() { + %X = load i32* @G + store i32 %X, i32* @G + ret void +} +; CHECK: define void @test3a +; CHECK-NEXT: ret void + + +define i32 @test3b() { + %V = load i32* @G + %C = icmp eq i32 %V, 17 + br i1 %C, label %T, label %F +T: + store i32 17, i32* @G + ret i32 %V +F: + store i32 123, i32* @G + ret i32 0 +} +; CHECK: define i32 @test3b +; CHECK-NOT: store +; CHECK: ret i32 0 |