diff options
Diffstat (limited to 'test/Transforms/InstCombine/strchr-1.ll')
-rw-r--r-- | test/Transforms/InstCombine/strchr-1.ll | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/test/Transforms/InstCombine/strchr-1.ll b/test/Transforms/InstCombine/strchr-1.ll index 66b3e2e..6c10ebd 100644 --- a/test/Transforms/InstCombine/strchr-1.ll +++ b/test/Transforms/InstCombine/strchr-1.ll @@ -1,20 +1,21 @@ ; Test that the strchr library call simplifier works correctly. ; RUN: opt < %s -instcombine -S | FileCheck %s -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" +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-n8:16:32" @hello = constant [14 x i8] c"hello world\5Cn\00" @null = constant [1 x i8] zeroinitializer +@newlines = constant [3 x i8] c"\0D\0A\00" @chp = global i8* zeroinitializer declare i8* @strchr(i8*, i32) define void @test_simplify1() { -; CHECK: store i8* getelementptr inbounds ([14 x i8]* @hello, i32 0, i32 6) +; CHECK: store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 6) ; CHECK-NOT: call i8* @strchr ; CHECK: ret void - %str = getelementptr [14 x i8]* @hello, i32 0, i32 0 + %str = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0 %dst = call i8* @strchr(i8* %str, i32 119) store i8* %dst, i8** @chp ret void @@ -25,18 +26,18 @@ define void @test_simplify2() { ; CHECK-NOT: call i8* @strchr ; CHECK: ret void - %str = getelementptr [1 x i8]* @null, i32 0, i32 0 + %str = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0 %dst = call i8* @strchr(i8* %str, i32 119) store i8* %dst, i8** @chp ret void } define void @test_simplify3() { -; CHECK: store i8* getelementptr inbounds ([14 x i8]* @hello, i32 0, i32 13) +; CHECK: store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 13) ; CHECK-NOT: call i8* @strchr ; CHECK: ret void - %src = getelementptr [14 x i8]* @hello, i32 0, i32 0 + %src = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0 %dst = call i8* @strchr(i8* %src, i32 0) store i8* %dst, i8** @chp ret void @@ -47,18 +48,18 @@ define void @test_simplify4(i32 %chr) { ; CHECK-NOT: call i8* @strchr ; CHECK: ret void - %src = getelementptr [14 x i8]* @hello, i32 0, i32 0 + %src = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0 %dst = call i8* @strchr(i8* %src, i32 %chr) store i8* %dst, i8** @chp ret void } define void @test_simplify5() { -; CHECK: store i8* getelementptr inbounds ([14 x i8]* @hello, i32 0, i32 13) +; CHECK: store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 13) ; CHECK-NOT: call i8* @strchr ; CHECK: ret void - %src = getelementptr [14 x i8]* @hello, i32 0, i32 0 + %src = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0 %dst = call i8* @strchr(i8* %src, i32 65280) store i8* %dst, i8** @chp ret void @@ -68,7 +69,7 @@ define void @test_simplify5() { define void @test_simplify6(i8* %str) { ; CHECK: %strlen = call i32 @strlen(i8* %str) ; CHECK-NOT: call i8* @strchr -; CHECK: %strchr = getelementptr i8* %str, i32 %strlen +; CHECK: %strchr = getelementptr i8, i8* %str, i32 %strlen ; CHECK: store i8* %strchr, i8** @chp, align 4 ; CHECK: ret void @@ -76,3 +77,19 @@ define void @test_simplify6(i8* %str) { store i8* %dst, i8** @chp ret void } + +; Check transformation strchr("\r\n", C) != nullptr -> (C & 9217) != 0 +define i1 @test_simplify7(i32 %C) { +; CHECK-LABEL: @test_simplify7 +; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 %C to i16 +; CHECK-NEXT: %memchr.bounds = icmp ult i16 [[TRUNC]], 16 +; CHECK-NEXT: [[SHL:%.*]] = shl i16 1, [[TRUNC]] +; CHECK-NEXT: [[AND:%.*]] = and i16 [[SHL]], 9217 +; CHECK-NEXT: %memchr.bits = icmp ne i16 [[AND]], 0 +; CHECK-NEXT: %memchr1 = and i1 %memchr.bounds, %memchr.bits +; CHECK-NEXT: ret i1 %memchr1 + + %dst = call i8* @strchr(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @newlines, i64 0, i64 0), i32 %C) + %cmp = icmp ne i8* %dst, null + ret i1 %cmp +} |