[llvm] r325281 - [SCCP] Test that constant propagation updates debug info, NFC

[Vedant Kumar via llvm-commits]

Author: vedantk
Date: Thu Feb 15 11:13:04 2018
New Revision: 325281

URL: http://llvm.org/viewvc/llvm-project?rev=325281&view=rev
Log:
[SCCP] Test that constant propagation updates debug info, NFC

This extends an existing test to check that SCCP updates the operands of
relevant dbg.value instructions as it does its work.

Modified:
    llvm/trunk/test/Transforms/SCCP/loadtest.ll

Modified: llvm/trunk/test/Transforms/SCCP/loadtest.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/SCCP/loadtest.ll?rev=325281&r1=325280&r2=325281&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/SCCP/loadtest.ll (original)
+++ llvm/trunk/test/Transforms/SCCP/loadtest.ll Thu Feb 15 11:13:04 2018
@@ -1,32 +1,44 @@
 ; This test makes sure that these instructions are properly constant propagated.
 
-; RUN: opt < %s -data-layout="e-p:32:32" -sccp -S | FileCheck %s
-; RUN: opt < %s -data-layout="E-p:32:32" -sccp -S | FileCheck %s
-
-; CHECK-NOT: load
-
+; RUN: opt < %s -data-layout="e-p:32:32" -debugify -sccp -S | FileCheck %s
+; RUN: opt < %s -data-layout="E-p:32:32" -debugify -sccp -S | FileCheck %s
 
 @X = constant i32 42		; <i32*> [#uses=1]
 @Y = constant [2 x { i32, float }] [ { i32, float } { i32 12, float 1.000000e+00 }, { i32, float } { i32 37, float 0x3FF3B2FEC0000000 } ]		; <[2 x { i32, float }]*> [#uses=2]
 
 define i32 @test1() {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 42
+; CHECK-NEXT: ret
 	%B = load i32, i32* @X		; <i32> [#uses=1]
 	ret i32 %B
 }
 
 define float @test2() {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT: call void @llvm.dbg.value(metadata float* getelementptr
+; CHECK-NEXT: call void @llvm.dbg.value(metadata float 0x3FF3B2FEC0000000
+; CHECK-NEXT: ret
 	%A = getelementptr [2 x { i32, float }], [2 x { i32, float }]* @Y, i64 0, i64 1, i32 1		; <float*> [#uses=1]
 	%B = load float, float* %A		; <float> [#uses=1]
 	ret float %B
 }
 
 define i32 @test3() {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* getelementptr
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 12
+; CHECK-NEXT: ret
 	%A = getelementptr [2 x { i32, float }], [2 x { i32, float }]* @Y, i64 0, i64 0, i32 0		; <i32*> [#uses=1]
 	%B = load i32, i32* %A
 	ret i32 %B
 }
 
 define i8 @test4() {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* bitcast
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i8
+; CHECK-NEXT: ret
 	%A = bitcast i32* @X to i8*
 	%B = load i8, i8* %A
 	ret i8 %B