[llvm-commits] [llvm] r120316 - in /llvm/trunk: lib/Analysis/ConstantFolding.cpp test/Transforms/ConstProp/extractvalue.ll test/Transforms/ConstProp/insertvalue.ll
Frits van Bommel
fvbommel at gmail.com
Mon Nov 29 12:36:52 PST 2010
Author: fvbommel
Date: Mon Nov 29 14:36:52 2010
New Revision: 120316
URL: http://llvm.org/viewvc/llvm-project?rev=120316&view=rev
Log:
Teach ConstantFoldInstruction() how to fold insertvalue and extractvalue.
Added:
llvm/trunk/test/Transforms/ConstProp/extractvalue.ll
llvm/trunk/test/Transforms/ConstProp/insertvalue.ll
Modified:
llvm/trunk/lib/Analysis/ConstantFolding.cpp
Modified: llvm/trunk/lib/Analysis/ConstantFolding.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ConstantFolding.cpp?rev=120316&r1=120315&r2=120316&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ConstantFolding.cpp (original)
+++ llvm/trunk/lib/Analysis/ConstantFolding.cpp Mon Nov 29 14:36:52 2010
@@ -740,7 +740,18 @@
if (const LoadInst *LI = dyn_cast<LoadInst>(I))
return ConstantFoldLoadInst(LI, TD);
-
+
+ if (InsertValueInst *IVI = dyn_cast<InsertValueInst>(I))
+ return ConstantExpr::getInsertValue(
+ cast<Constant>(IVI->getAggregateOperand()),
+ cast<Constant>(IVI->getInsertedValueOperand()),
+ IVI->idx_begin(), IVI->getNumIndices());
+
+ if (ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(I))
+ return ConstantExpr::getExtractValue(
+ cast<Constant>(EVI->getAggregateOperand()),
+ EVI->idx_begin(), EVI->getNumIndices());
+
return ConstantFoldInstOperands(I->getOpcode(), I->getType(),
Ops.data(), Ops.size(), TD);
}
Added: llvm/trunk/test/Transforms/ConstProp/extractvalue.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/ConstProp/extractvalue.ll?rev=120316&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/ConstProp/extractvalue.ll (added)
+++ llvm/trunk/test/Transforms/ConstProp/extractvalue.ll Mon Nov 29 14:36:52 2010
@@ -0,0 +1,68 @@
+; RUN: opt < %s -constprop -S | FileCheck %s
+
+%struct = type { i32, [4 x i8] }
+%array = type [3 x %struct]
+
+define i32 @test1() {
+ %A = extractvalue %struct { i32 2, [4 x i8] c"foo\00" }, 0
+ ret i32 %A
+; CHECK: @test1
+; CHECK: ret i32 2
+}
+
+define i8 @test2() {
+ %A = extractvalue %struct { i32 2, [4 x i8] c"foo\00" }, 1, 2
+ ret i8 %A
+; CHECK: @test2
+; CHECK: ret i8 111
+}
+
+define i32 @test3() {
+ %A = extractvalue %array [ %struct { i32 0, [4 x i8] c"aaaa" }, %struct { i32 1, [4 x i8] c"bbbb" }, %struct { i32 2, [4 x i8] c"cccc" } ], 1, 0
+ ret i32 %A
+; CHECK: @test3
+; CHECK: ret i32 1
+}
+
+define i32 @zeroinitializer-test1() {
+ %A = extractvalue %struct zeroinitializer, 0
+ ret i32 %A
+; CHECK: @zeroinitializer-test1
+; CHECK: ret i32 0
+}
+
+define i8 @zeroinitializer-test2() {
+ %A = extractvalue %struct zeroinitializer, 1, 2
+ ret i8 %A
+; CHECK: @zeroinitializer-test2
+; CHECK: ret i8 0
+}
+
+define i32 @zeroinitializer-test3() {
+ %A = extractvalue %array zeroinitializer, 1, 0
+ ret i32 %A
+; CHECK: @zeroinitializer-test3
+; CHECK: ret i32 0
+}
+
+define i32 @undef-test1() {
+ %A = extractvalue %struct undef, 0
+ ret i32 %A
+; CHECK: @undef-test1
+; CHECK: ret i32 undef
+}
+
+define i8 @undef-test2() {
+ %A = extractvalue %struct undef, 1, 2
+ ret i8 %A
+; CHECK: @undef-test2
+; CHECK: ret i8 undef
+}
+
+define i32 @undef-test3() {
+ %A = extractvalue %array undef, 1, 0
+ ret i32 %A
+; CHECK: @undef-test3
+; CHECK: ret i32 undef
+}
+
Added: llvm/trunk/test/Transforms/ConstProp/insertvalue.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/ConstProp/insertvalue.ll?rev=120316&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/ConstProp/insertvalue.ll (added)
+++ llvm/trunk/test/Transforms/ConstProp/insertvalue.ll Mon Nov 29 14:36:52 2010
@@ -0,0 +1,68 @@
+; RUN: opt < %s -constprop -S | FileCheck %s
+
+%struct = type { i32, [4 x i8] }
+%array = type [3 x %struct]
+
+define %struct @test1() {
+ %A = insertvalue %struct { i32 2, [4 x i8] c"foo\00" }, i32 1, 0
+ ret %struct %A
+; CHECK: @test1
+; CHECK: ret %struct { i32 1, [4 x i8] c"foo\00" }
+}
+
+define %struct @test2() {
+ %A = insertvalue %struct { i32 2, [4 x i8] c"foo\00" }, i8 1, 1, 2
+ ret %struct %A
+; CHECK: @test2
+; CHECK: ret %struct { i32 2, [4 x i8] c"fo\01\00" }
+}
+
+define %array @test3() {
+ %A = insertvalue %array [ %struct { i32 0, [4 x i8] c"aaaa" }, %struct { i32 1, [4 x i8] c"bbbb" }, %struct { i32 2, [4 x i8] c"cccc" } ], i32 -1, 1, 0
+ ret %array %A
+; CHECK: @test3
+; CHECK:ret %array [%struct { i32 0, [4 x i8] c"aaaa" }, %struct { i32 -1, [4 x i8] c"bbbb" }, %struct { i32 2, [4 x i8] c"cccc" }]
+}
+
+define %struct @zeroinitializer-test1() {
+ %A = insertvalue %struct zeroinitializer, i32 1, 0
+ ret %struct %A
+; CHECK: @zeroinitializer-test1
+; CHECK: ret %struct { i32 1, [4 x i8] zeroinitializer }
+}
+
+define %struct @zeroinitializer-test2() {
+ %A = insertvalue %struct zeroinitializer, i8 1, 1, 2
+ ret %struct %A
+; CHECK: @zeroinitializer-test2
+; CHECK: ret %struct { i32 0, [4 x i8] c"\00\00\01\00" }
+}
+
+define %array @zeroinitializer-test3() {
+ %A = insertvalue %array zeroinitializer, i32 1, 1, 0
+ ret %array %A
+; CHECK: @zeroinitializer-test3
+; CHECK: ret %array [%struct zeroinitializer, %struct { i32 1, [4 x i8] zeroinitializer }, %struct zeroinitializer]
+}
+
+define %struct @undef-test1() {
+ %A = insertvalue %struct undef, i32 1, 0
+ ret %struct %A
+; CHECK: @undef-test1
+; CHECK: ret %struct { i32 1, [4 x i8] undef }
+}
+
+define %struct @undef-test2() {
+ %A = insertvalue %struct undef, i8 0, 1, 2
+ ret %struct %A
+; CHECK: @undef-test2
+; CHECK: ret %struct { i32 undef, [4 x i8] [i8 undef, i8 undef, i8 0, i8 undef] }
+}
+
+define %array @undef-test3() {
+ %A = insertvalue %array undef, i32 0, 1, 0
+ ret %array %A
+; CHECK: @undef-test3
+; CHECK: ret %array [%struct undef, %struct { i32 0, [4 x i8] undef }, %struct undef]
+}
+
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