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-rw-r--r--test/Transforms/InstCombine/strchr-1.ll37
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
+}