derek.holloway
7502bf64a4
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53 lines
1.3 KiB
LLVM
53 lines
1.3 KiB
LLVM
; Test that the fwrite library call simplifier works correctly.
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;
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64"
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%FILE = type { }
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@str = constant [1 x i8] zeroinitializer
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@empty = constant [0 x i8] zeroinitializer
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declare i64 @fwrite(ptr, i64, i64, ptr)
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; Check fwrite(S, 1, 1, fp) -> fputc(S[0], fp).
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define void @test_simplify1(ptr %fp) {
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; CHECK-LABEL: @test_simplify1(
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call i64 @fwrite(ptr @str, i64 1, i64 1, ptr %fp)
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; CHECK-NEXT: call i32 @fputc(i32 0, ptr %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_simplify2(ptr %fp) {
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; CHECK-LABEL: @test_simplify2(
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call i64 @fwrite(ptr @empty, i64 1, i64 0, ptr %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(ptr %fp) {
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; CHECK-LABEL: @test_simplify3(
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call i64 @fwrite(ptr @empty, i64 0, i64 1, ptr %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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define i64 @test_no_simplify1(ptr %fp) {
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; CHECK-LABEL: @test_no_simplify1(
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%ret = call i64 @fwrite(ptr @str, i64 1, i64 1, ptr %fp)
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; CHECK-NEXT: call i64 @fwrite
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ret i64 %ret
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; CHECK-NEXT: ret i64 %ret
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}
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define void @test_no_simplify2(ptr %fp, i64 %size) {
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; CHECK-LABEL: @test_no_simplify2(
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call i64 @fwrite(ptr @str, i64 %size, i64 1, ptr %fp)
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; CHECK-NEXT: call i64 @fwrite
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ret void
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; CHECK-NEXT: ret void
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}
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