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https://github.com/c64scene-ar/llvm-6502.git
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5c5e230ac7
This patch migrates the fputs optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168893 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.3 KiB
LLVM
44 lines
1.3 KiB
LLVM
; Test that the fputs 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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%FILE = type { }
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@empty = constant [1 x i8] zeroinitializer
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@A = constant [2 x i8] c"A\00"
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@hello = constant [7 x i8] c"hello\0A\00"
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declare i32 @fputs(i8*, %FILE*)
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; Check fputs(str, fp) --> fwrite(str, 1, strlen(s), fp).
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define void @test_simplify1(%FILE* %fp) {
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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 @fputs(i8* %str, %FILE* %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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; NOTE: The fwrite simplifier simplifies this further to fputc.
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define void @test_simplify2(%FILE* %fp) {
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; CHECK: @test_simplify2
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%str = getelementptr [2 x i8]* @A, i32 0, i32 0
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call i32 @fputs(i8* %str, %FILE* %fp)
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; CHECK-NEXT: call i32 @fputc(i32 65, %FILE* %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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define void @test_simplify3(%FILE* %fp) {
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; CHECK: @test_simplify3
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%str = getelementptr [7 x i8]* @hello, i32 0, i32 0
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call i32 @fputs(i8* %str, %FILE* %fp)
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; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([7 x i8]* @hello, i32 0, i32 0), i32 6, i32 1, %FILE* %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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