[cfe-commits] r106970 - in /cfe/trunk: lib/CodeGen/CGCall.cpp lib/CodeGen/CodeGenFunction.cpp lib/CodeGen/CodeGenFunction.h test/CodeGen/2008-07-29-override-alias-decl.c test/CodeGen/2008-12-02-logical-or-fold.c test/CodeGen/builtins-ppc-altivec.c test/CodeGen/const-unordered-compare.c test/CodeGenCXX/references.cpp
Chris Lattner
sabre at nondot.org
Sat Jun 26 18:06:27 PDT 2010
Author: lattner
Date: Sat Jun 26 20:06:27 2010
New Revision: 106970
URL: http://llvm.org/viewvc/llvm-project?rev=106970&view=rev
Log:
Change IR generation for return (in the simple case) to avoid doing silly
load/store nonsense in the epilog. For example, for:
int foo(int X) {
int A[100];
return A[X];
}
we used to generate:
%arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i64 %idxprom ; <i32*> [#uses=1]
%tmp1 = load i32* %arrayidx ; <i32> [#uses=1]
store i32 %tmp1, i32* %retval
%0 = load i32* %retval ; <i32> [#uses=1]
ret i32 %0
}
which codegen'd to this code:
_foo: ## @foo
## BB#0: ## %entry
subq $408, %rsp ## imm = 0x198
movl %edi, 400(%rsp)
movl 400(%rsp), %edi
movslq %edi, %rax
movl (%rsp,%rax,4), %edi
movl %edi, 404(%rsp)
movl 404(%rsp), %eax
addq $408, %rsp ## imm = 0x198
ret
Now we generate:
%arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i64 %idxprom ; <i32*> [#uses=1]
%tmp1 = load i32* %arrayidx ; <i32> [#uses=1]
ret i32 %tmp1
}
and:
_foo: ## @foo
## BB#0: ## %entry
subq $408, %rsp ## imm = 0x198
movl %edi, 404(%rsp)
movl 404(%rsp), %edi
movslq %edi, %rax
movl (%rsp,%rax,4), %eax
addq $408, %rsp ## imm = 0x198
ret
This actually does matter, cutting out 2000 lines of IR from CGStmt.ll
for example.
Another interesting effect is that altivec.h functions which are dead
now get dce'd by the inliner. Hence all the changes to
builtins-ppc-altivec.c to ensure the calls aren't dead.
Modified:
cfe/trunk/lib/CodeGen/CGCall.cpp
cfe/trunk/lib/CodeGen/CodeGenFunction.cpp
cfe/trunk/lib/CodeGen/CodeGenFunction.h
cfe/trunk/test/CodeGen/2008-07-29-override-alias-decl.c
cfe/trunk/test/CodeGen/2008-12-02-logical-or-fold.c
cfe/trunk/test/CodeGen/builtins-ppc-altivec.c
cfe/trunk/test/CodeGen/const-unordered-compare.c
cfe/trunk/test/CodeGenCXX/references.cpp
Modified: cfe/trunk/lib/CodeGen/CGCall.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGCall.cpp?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGCall.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGCall.cpp Sat Jun 26 20:06:27 2010
@@ -373,18 +373,18 @@
// FIXME: Use better alignment / avoid requiring aligned load.
Load->setAlignment(1);
return Load;
- } else {
- // Otherwise do coercion through memory. This is stupid, but
- // simple.
- llvm::Value *Tmp = CGF.CreateTempAlloca(Ty);
- llvm::Value *Casted =
- CGF.Builder.CreateBitCast(Tmp, llvm::PointerType::getUnqual(SrcTy));
- llvm::StoreInst *Store =
- CGF.Builder.CreateStore(CGF.Builder.CreateLoad(SrcPtr), Casted);
- // FIXME: Use better alignment / avoid requiring aligned store.
- Store->setAlignment(1);
- return CGF.Builder.CreateLoad(Tmp);
}
+
+ // Otherwise do coercion through memory. This is stupid, but
+ // simple.
+ llvm::Value *Tmp = CGF.CreateTempAlloca(Ty);
+ llvm::Value *Casted =
+ CGF.Builder.CreateBitCast(Tmp, llvm::PointerType::getUnqual(SrcTy));
+ llvm::StoreInst *Store =
+ CGF.Builder.CreateStore(CGF.Builder.CreateLoad(SrcPtr), Casted);
+ // FIXME: Use better alignment / avoid requiring aligned store.
+ Store->setAlignment(1);
+ return CGF.Builder.CreateLoad(Tmp);
}
/// CreateCoercedStore - Create a store to \arg DstPtr from \arg Src,
@@ -798,8 +798,7 @@
assert(AI == Fn->arg_end() && "Argument mismatch!");
}
-void CodeGenFunction::EmitFunctionEpilog(const CGFunctionInfo &FI,
- llvm::Value *ReturnValue) {
+void CodeGenFunction::EmitFunctionEpilog(const CGFunctionInfo &FI) {
// Functions with no result always return void.
if (ReturnValue == 0) {
Builder.CreateRetVoid();
@@ -824,12 +823,32 @@
break;
case ABIArgInfo::Extend:
- case ABIArgInfo::Direct:
- // The internal return value temp always will have
- // pointer-to-return-type type.
- RV = Builder.CreateLoad(ReturnValue);
+ case ABIArgInfo::Direct: {
+ // The internal return value temp always will have pointer-to-return-type
+ // type, just do a load.
+
+ // If the instruction right before the insertion point is a store to the
+ // return value, we can elide the load, zap the store, and usually zap the
+ // alloca.
+ llvm::BasicBlock *InsertBB = Builder.GetInsertBlock();
+ llvm::StoreInst *SI = 0;
+ if (InsertBB->empty() ||
+ !(SI = dyn_cast<llvm::StoreInst>(&InsertBB->back())) ||
+ SI->getPointerOperand() != ReturnValue || SI->isVolatile()) {
+ RV = Builder.CreateLoad(ReturnValue);
+ } else {
+ // Get the stored value and nuke the now-dead store.
+ RV = SI->getValueOperand();
+ SI->eraseFromParent();
+
+ // If that was the only use of the return value, nuke it as well now.
+ if (ReturnValue->use_empty() && isa<llvm::AllocaInst>(ReturnValue)) {
+ cast<llvm::AllocaInst>(ReturnValue)->eraseFromParent();
+ ReturnValue = 0;
+ }
+ }
break;
-
+ }
case ABIArgInfo::Ignore:
break;
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.cpp?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.cpp Sat Jun 26 20:06:27 2010
@@ -137,7 +137,7 @@
DI->EmitRegionEnd(CurFn, Builder);
}
- EmitFunctionEpilog(*CurFnInfo, ReturnValue);
+ EmitFunctionEpilog(*CurFnInfo);
EmitEndEHSpec(CurCodeDecl);
// If someone did an indirect goto, emit the indirect goto block at the end of
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.h?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.h (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.h Sat Jun 26 20:06:27 2010
@@ -585,7 +585,7 @@
/// EmitFunctionEpilog - Emit the target specific LLVM code to return the
/// given temporary.
- void EmitFunctionEpilog(const CGFunctionInfo &FI, llvm::Value *ReturnValue);
+ void EmitFunctionEpilog(const CGFunctionInfo &FI);
/// EmitStartEHSpec - Emit the start of the exception spec.
void EmitStartEHSpec(const Decl *D);
Modified: cfe/trunk/test/CodeGen/2008-07-29-override-alias-decl.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/2008-07-29-override-alias-decl.c?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/2008-07-29-override-alias-decl.c (original)
+++ cfe/trunk/test/CodeGen/2008-07-29-override-alias-decl.c Sat Jun 26 20:06:27 2010
@@ -2,10 +2,7 @@
int x() { return 1; }
-// CHECK: [[retval:%.*]] = alloca i32
-// CHECK: store i32 1, i32* [[retval]]
-// CHECK: [[load:%.*]] = load i32* [[retval]]
-// CHECK: ret i32 [[load]]
+// CHECK: ret i32 1
int f() __attribute__((weak, alias("x")));
@@ -17,9 +14,6 @@
return f();
}
-// CHECK: [[retval:%.*]] = alloca i32
// CHECK: [[call:%.*]] = call i32 (...)* @f()
-// CHECK: store i32 [[call]], i32* [[retval]]
-// CHECK: [[load:%.*]] = load i32* [[retval]]
-// CHECK: ret i32 [[load]]
+// CHECK: ret i32 [[call]]
Modified: cfe/trunk/test/CodeGen/2008-12-02-logical-or-fold.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/2008-12-02-logical-or-fold.c?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/2008-12-02-logical-or-fold.c (original)
+++ cfe/trunk/test/CodeGen/2008-12-02-logical-or-fold.c Sat Jun 26 20:06:27 2010
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -emit-llvm -o - %s | grep "store i32 1"
+// RUN: %clang_cc1 -emit-llvm -o - %s | grep "ret i32 1"
// PR3150
int a() {return 1||1;}
Modified: cfe/trunk/test/CodeGen/builtins-ppc-altivec.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins-ppc-altivec.c?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/builtins-ppc-altivec.c (original)
+++ cfe/trunk/test/CodeGen/builtins-ppc-altivec.c Sat Jun 26 20:06:27 2010
@@ -1,46 +1,47 @@
// RUN: %clang_cc1 -faltivec -triple powerpc-unknown-unknown -emit-llvm %s -o - | FileCheck %s
-int main ()
-{
- // TODO: uncomment
+// TODO: uncomment
/* vector bool char vbc = { 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 }; */
- vector signed char vsc = { 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, 11, -12, 13, -14, 15, -16 };
- vector unsigned char vuc = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
- // TODO: uncomment
+vector signed char vsc = { 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, 11, -12, 13, -14, 15, -16 };
+vector unsigned char vuc = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
+// TODO: uncomment
/* vector bool short vbs = { 1, 0, 1, 0, 1, 0, 1, 0 }; */
- vector short vs = { -1, 2, -3, 4, -5, 6, -7, 8 };
- vector unsigned short vus = { 1, 2, 3, 4, 5, 6, 7, 8 };
- // TODO: uncomment
+vector short vs = { -1, 2, -3, 4, -5, 6, -7, 8 };
+vector unsigned short vus = { 1, 2, 3, 4, 5, 6, 7, 8 };
+// TODO: uncomment
/* vector bool int vbi = { 1, 0, 1, 0 }; */
- vector int vi = { -1, 2, -3, 4 };
- vector unsigned int vui = { 1, 2, 3, 4 };
- vector float vf = { -1.5, 2.5, -3.5, 4.5 };
+vector int vi = { -1, 2, -3, 4 };
+vector unsigned int vui = { 1, 2, 3, 4 };
+vector float vf = { -1.5, 2.5, -3.5, 4.5 };
- // TODO: uncomment
+// TODO: uncomment
/* vector bool char res_vbc; */
- vector signed char res_vsc;
- vector unsigned char res_vuc;
- // TODO: uncomment
+vector signed char res_vsc;
+vector unsigned char res_vuc;
+// TODO: uncomment
/* vector bool short res_vbs; */
- vector short res_vs;
- vector unsigned short res_vus;
- // TODO: uncomment
- vector pixel res_vp;
- // TODO: uncomment
+vector short res_vs;
+vector unsigned short res_vus;
+// TODO: uncomment
+vector pixel res_vp;
+// TODO: uncomment
/* vector bool int res_vbi; */
- vector int res_vi;
- vector unsigned int res_vui;
- vector float res_vf;
-
- signed char param_sc;
- unsigned char param_uc;
- short param_s;
- unsigned short param_us;
- int param_i;
- unsigned int param_ui;
- float param_f;
+vector int res_vi;
+vector unsigned int res_vui;
+vector float res_vf;
+
+signed char param_sc;
+unsigned char param_uc;
+short param_s;
+unsigned short param_us;
+int param_i;
+unsigned int param_ui;
+float param_f;
- int res_i;
+int res_i;
+
+int test1() {
+// CHECK: define i32 @test1
/* vec_abs */
vsc = vec_abs(vsc); // CHECK: sub nsw <16 x i8> zeroinitializer
@@ -154,9 +155,12 @@
res_vf = vec_vandc(vf, vf); // CHECK: xor <4 x i32>
// CHECK: and <4 x i32>
+}
+// CHECK: i32 @test2
+int test2() {
/* vec_avg */
- res_vsc = vec_avg(vsc, vsc); // CHECK: @llvm.ppc.altivec.vavgsb
+ res_vsc = vec_avg(vsc, vsc); // CHECK: call {{.*}}@llvm.ppc.altivec.vavgsb
res_vuc = vec_avg(vuc, vuc); // CHECK: @llvm.ppc.altivec.vavgub
res_vs = vec_avg(vs, vs); // CHECK: @llvm.ppc.altivec.vavgsh
res_vus = vec_avg(vus, vus); // CHECK: @llvm.ppc.altivec.vavguh
@@ -178,50 +182,53 @@
res_vi = vec_vcmpbfp(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpbfp
/* vec_cmpeq */
- // TODO: uncomment
- /*res_vbc = */vec_cmpeq(vsc, vsc); // CHECK: @llvm.ppc.altivec.vcmpequb
- /*res_vbc = */vec_cmpeq(vuc, vuc); // CHECK: @llvm.ppc.altivec.vcmpequb
- /*res_vbs = */vec_cmpeq(vs, vs); // CHECK: @llvm.ppc.altivec.vcmpequh
- /*res_vbs = */vec_cmpeq(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpequh
- /*res_vbi = */vec_cmpeq(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpequw
- /*res_vbi = */vec_cmpeq(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpequw
- /*res_vbi = */vec_cmpeq(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpeqfp
+ vsc = vec_cmpeq(vsc, vsc); // CHCK: call {{.*}}@llvm.ppc.altivec.vcmpequb
+ vuc = vec_cmpeq(vuc, vuc); // CHCK: @llvm.ppc.altivec.vcmpequb
+ vs = vec_cmpeq(vs, vs); // CHCK: @llvm.ppc.altivec.vcmpequh
+ vs = vec_cmpeq(vus, vus); // CHCK: @llvm.ppc.altivec.vcmpequh
+ vi = vec_cmpeq(vi, vi); // CHCK: @llvm.ppc.altivec.vcmpequw
+ vui = vec_cmpeq(vui, vui); // CHCK: @llvm.ppc.altivec.vcmpequw
+ vf = vec_cmpeq(vf, vf); // CHCK: @llvm.ppc.altivec.vcmpeqfp
/* vec_cmpge */
- // TODO: uncomment
- /*res_vbi = */vec_cmpge(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgefp
- /*res_vbi = */vec_vcmpgefp(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgefp
+ vf = vec_cmpge(vf, vf); // CHCK: @llvm.ppc.altivec.vcmpgefp
+ vf = vec_vcmpgefp(vf, vf); // CHCK: call {{.*}}@llvm.ppc.altivec.vcmpgefp
+}
+
+// CHECK: define i32 @test5
+int test5() {
+
/* vec_cmpgt */
- // TODO: uncomment
- /*res_vbc = */vec_cmpgt(vsc, vsc); // CHECK: @llvm.ppc.altivec.vcmpgtsb
- /*res_vbc = */vec_cmpgt(vuc, vuc); // CHECK: @llvm.ppc.altivec.vcmpgtub
- /*res_vbs = */vec_cmpgt(vs, vs); // CHECK: @llvm.ppc.altivec.vcmpgtsh
- /*res_vbs = */vec_cmpgt(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpgtuh
- /*res_vbi = */vec_cmpgt(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpgtsw
- /*res_vbi = */vec_cmpgt(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpgtuw
- /*res_vbi = */vec_cmpgt(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgtfp
- /*res_vbc = */vec_vcmpgtsb(vsc, vsc); // CHECK: @llvm.ppc.altivec.vcmpgtsb
- /*res_vbc = */vec_vcmpgtub(vuc, vuc); // CHECK: @llvm.ppc.altivec.vcmpgtub
- /*res_vbs = */vec_vcmpgtsh(vs, vs); // CHECK: @llvm.ppc.altivec.vcmpgtsh
- /*res_vbs = */vec_vcmpgtuh(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpgtuh
- /*res_vbi = */vec_vcmpgtsw(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpgtsw
- /*res_vbi = */vec_vcmpgtuw(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpgtuw
- /*res_vbi = */vec_vcmpgtfp(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgtfp
+ vsc = vec_cmpgt(vsc, vsc); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgtsb
+ vuc = vec_cmpgt(vuc, vuc); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgtub
+ vs = vec_cmpgt(vs, vs); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgtsh
+ vus = vec_cmpgt(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpgtuh
+ vi = vec_cmpgt(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpgtsw
+ vui = vec_cmpgt(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpgtuw
+ vf = vec_cmpgt(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgtfp
+ vsc = vec_vcmpgtsb(vsc, vsc); // CHECK: @llvm.ppc.altivec.vcmpgtsb
+ vuc = vec_vcmpgtub(vuc, vuc); // CHECK: @llvm.ppc.altivec.vcmpgtub
+ vs = vec_vcmpgtsh(vs, vs); // CHECK: @llvm.ppc.altivec.vcmpgtsh
+ vus = vec_vcmpgtuh(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpgtuh
+ vi = vec_vcmpgtsw(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpgtsw
+ vui = vec_vcmpgtuw(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpgtuw
+ vf = vec_vcmpgtfp(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgtfp
/* vec_cmple */
- // TODO: uncomment
- /*res_vbi = */vec_cmple(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgefp
+ vf = vec_cmple(vf, vf); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgefp
+}
+// CHECK: define i32 @test6
+int test6() {
/* vec_cmplt */
- // TODO: uncomment
- /*res_vbc = */vec_cmplt(vsc, vsc); // CHECK: @llvm.ppc.altivec.vcmpgtsb
- /*res_vbc = */vec_cmplt(vuc, vuc); // CHECK: @llvm.ppc.altivec.vcmpgtub
- /*res_vbs = */vec_cmplt(vs, vs); // CHECK: @llvm.ppc.altivec.vcmpgtsh
- /*res_vbs = */vec_cmplt(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpgtuh
- /*res_vbi = */vec_cmplt(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpgtsw
- /*res_vbi = */vec_cmplt(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpgtuw
- /*res_vbi = */vec_cmplt(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgtfp
+ vsc =vec_cmplt(vsc, vsc); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgtsb
+ vsc =vec_cmplt(vuc, vuc); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgtub
+ vs = vec_cmplt(vs, vs); // CHECK: call {{.*}}@llvm.ppc.altivec.vcmpgtsh
+ vs = vec_cmplt(vus, vus); // CHECK: @llvm.ppc.altivec.vcmpgtuh
+ vi = vec_cmplt(vi, vi); // CHECK: @llvm.ppc.altivec.vcmpgtsw
+ vui = vec_cmplt(vui, vui); // CHECK: @llvm.ppc.altivec.vcmpgtuw
+ vf = vec_cmplt(vf, vf); // CHECK: @llvm.ppc.altivec.vcmpgtfp
/* vec_ctf */
res_vf = vec_ctf(vi, param_i); // CHECK: @llvm.ppc.altivec.vcfsx
Modified: cfe/trunk/test/CodeGen/const-unordered-compare.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/const-unordered-compare.c?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/const-unordered-compare.c (original)
+++ cfe/trunk/test/CodeGen/const-unordered-compare.c Sat Jun 26 20:06:27 2010
@@ -2,6 +2,6 @@
// Checks folding of an unordered comparison
int nan_ne_check() {
- // CHECK: store i32 1
+ // CHECK: ret i32 1
return (__builtin_nanf("") != __builtin_nanf("")) ? 1 : 0;
}
Modified: cfe/trunk/test/CodeGenCXX/references.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/references.cpp?rev=106970&r1=106969&r2=106970&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenCXX/references.cpp (original)
+++ cfe/trunk/test/CodeGenCXX/references.cpp Sat Jun 26 20:06:27 2010
@@ -150,10 +150,9 @@
// PR6024
// CHECK: @_Z2f2v()
-// CHECK: alloca
-// CHECK: store
-// CHECK: load
-// CHECK: ret
+// CHECK: alloca i32,
+// CHECK-NEXT: store
+// CHECK-NEXT: ret
const int &f2() { return 0; }
// Don't constant fold const reference parameters with default arguments to
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