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https://github.com/c64scene-ar/llvm-6502.git
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6e1591a5d5
This patch migrates the strstr optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167682 91177308-0d34-0410-b5e6-96231b3b80d8
19 lines
612 B
LLVM
19 lines
612 B
LLVM
; Test that the strstr 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:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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@null = private constant [1 x i8] zeroinitializer
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declare i8 @strstr(i8*, i8*)
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define i8 @test_no_simplify1(i8* %str) {
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; CHECK: @test_no_simplify1
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%pat = getelementptr inbounds [1 x i8]* @null, i32 0, i32 0
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%ret = call i8 @strstr(i8* %str, i8* %pat)
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; CHECK-NEXT: call i8 @strstr
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ret i8 %ret
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; CHECK-NEXT: ret i8 %ret
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}
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