[llvm] r310598 - [InstCombine] regenerate test checks, add comments; NFC
Sanjay Patel via llvm-commits
llvm-commits at lists.llvm.org
Thu Aug 10 07:51:42 PDT 2017
Author: spatel
Date: Thu Aug 10 07:51:42 2017
New Revision: 310598
URL: http://llvm.org/viewvc/llvm-project?rev=310598&view=rev
Log:
[InstCombine] regenerate test checks, add comments; NFC
Modified:
llvm/trunk/test/Transforms/InstCombine/memcpy.ll
Modified: llvm/trunk/test/Transforms/InstCombine/memcpy.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/memcpy.ll?rev=310598&r1=310597&r2=310598&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/memcpy.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/memcpy.ll Thu Aug 10 07:51:42 2017
@@ -3,25 +3,35 @@
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
+; Same src/dest.
+
define void @test1(i8* %a) {
- tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 false)
- ret void
-; CHECK-LABEL: define void @test1(
-; CHECK-NEXT: ret void
+; CHECK-LABEL: @test1(
+; CHECK-NEXT: ret void
+;
+ tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 false)
+ ret void
}
+; PR8267 - same src/dest, but volatile.
-; PR8267
define void @test2(i8* %a) {
- tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 true)
- ret void
-; CHECK-LABEL: define void @test2(
-; CHECK-NEXT: call void @llvm.memcpy
+; CHECK-LABEL: @test2(
+; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 true)
+; CHECK-NEXT: ret void
+;
+ tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 true)
+ ret void
}
+; 17179869184 == 0x400000000 - make sure that doesn't get truncated to 32-bit.
+
define void @test3(i8* %d, i8* %s) {
- tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 17179869184, i32 4, i1 false)
- ret void
-; CHECK-LABEL: define void @test3(
-; CHECK-NEXT: call void @llvm.memcpy
+; CHECK-LABEL: @test3(
+; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 17179869184, i32 4, i1 false)
+; CHECK-NEXT: ret void
+;
+ tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 17179869184, i32 4, i1 false)
+ ret void
}
+
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