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42 lines
1.3 KiB
LLVM
42 lines
1.3 KiB
LLVM
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; Test that the printf 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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@hello_world = constant [13 x i8] c"hello world\0A\00"
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@h = constant [2 x i8] c"h\00"
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@percent_s = constant [4 x i8] c"%s\0A\00"
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declare void @printf(i8*, ...)
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; Check simplification of printf with void return type.
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define void @test_simplify1() {
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; CHECK: @test_simplify1
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%fmt = getelementptr [2 x i8]* @h, i32 0, i32 0
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call void (i8*, ...)* @printf(i8* %fmt)
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; CHECK-NEXT: call i32 @putchar(i32 104)
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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_simplify2() {
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; CHECK: @test_simplify2
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%fmt = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
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call void (i8*, ...)* @printf(i8* %fmt)
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; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([12 x i8]* @str, i32 0, i32 0))
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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_simplify6() {
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; CHECK: @test_simplify6
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%fmt = getelementptr [4 x i8]* @percent_s, i32 0, i32 0
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%str = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
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call void (i8*, ...)* @printf(i8* %fmt, i8* %str)
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; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0))
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ret void
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; CHECK-NEXT: ret void
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}
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