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https://github.com/c64scene-ar/llvm-6502.git
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aa8cccf129
This patch migrates the puts optimizations from the simplify-libcalls pass into the instcombine library call simplifier. All the simplifiers from simplify-libcalls have now been migrated to instcombine. Yay! Just a few other bits to migrate (prototype attribute inference and a few statistics) and simplify-libcalls can finally be put to rest. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168925 91177308-0d34-0410-b5e6-96231b3b80d8
32 lines
905 B
LLVM
32 lines
905 B
LLVM
; Test that the puts library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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@empty = constant [1 x i8] zeroinitializer
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declare i32 @puts(i8*)
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; Check puts("") -> putchar('\n').
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define void @test_simplify1() {
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; CHECK: @test_simplify1
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%str = getelementptr [1 x i8]* @empty, i32 0, i32 0
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call i32 @puts(i8* %str)
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; CHECK-NEXT: call i32 @putchar(i32 10)
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ret void
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; CHECK-NEXT: ret void
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}
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; Don't simplify if the return value is used.
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define i32 @test_no_simplify1() {
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; CHECK: @test_no_simplify1
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%str = getelementptr [1 x i8]* @empty, i32 0, i32 0
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%ret = call i32 @puts(i8* %str)
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; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([1 x i8]* @empty, i32 0, i32 0))
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ret i32 %ret
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; CHECK-NEXT: ret i32 %ret
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}
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