mirror of
https://github.com/c64scene-ar/llvm-6502.git
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c581acbbba
with multiple return values it inserts a PHI to merge them all together. However, if the return values are all the same, it ends up with a pointless PHI and this pointless PHI happens to really block SRoA from happening in at least a silly C++ example written by Doug, but probably others. This fixes rdar://7339069. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85206 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
781 B
LLVM
47 lines
781 B
LLVM
; RUN: opt < %s -inline -scalarrepl -S | FileCheck %s
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define i32 @test1f(i32 %i) {
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ret i32 %i
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}
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define i32 @test1(i32 %W) {
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%X = call i32 @test1f(i32 7)
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%Y = add i32 %X, %W
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ret i32 %Y
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; CHECK: @test1(
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; CHECK-NEXT: %Y = add i32 7, %W
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; CHECK-NEXT: ret i32 %Y
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}
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; rdar://7339069
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%T = type { i32, i32 }
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; CHECK-NOT: @test2f
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define internal %T* @test2f(i1 %cond, %T* %P) {
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br i1 %cond, label %T, label %F
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T:
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%A = getelementptr %T* %P, i32 0, i32 0
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store i32 42, i32* %A
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ret %T* %P
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F:
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ret %T* %P
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}
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define i32 @test2(i1 %cond) {
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%A = alloca %T
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%B = call %T* @test2f(i1 %cond, %T* %A)
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%C = getelementptr %T* %B, i32 0, i32 0
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%D = load i32* %C
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ret i32 %D
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; CHECK: @test2(
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; CHECK-NOT: = alloca
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; CHECK: ret i32 42
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}
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