From 4044f6197a75462b7055476d4e03873d8db3e606 Mon Sep 17 00:00:00 2001
From: Derek Schuff <dschuff@google.com>
Date: Mon, 10 Aug 2015 23:02:37 +0000
Subject: [PATCH] Add NaCl (a target where long double = double) to long double
 ABI test

A test was recently (r244468) added to cover long double calling convention
codegen, distinguishing between Android and GNU conventions (where long doubles
are fp128 and x86_fp80, respectively). Native Client is a target where long
doubles are the same as doubles. This change augments the test to cover
that case.

Also rename the test to test/codeGen/X86_64-longdouble.c

Differential Revision: http://reviews.llvm.org/D11921

llvm-svn: 244524
---
 .../{x86_64-fp128.c => x86_64-longdouble.c}   | 28 ++++++++++++++++---
 1 file changed, 24 insertions(+), 4 deletions(-)
 rename clang/test/CodeGen/{x86_64-fp128.c => x86_64-longdouble.c} (78%)

diff --git a/clang/test/CodeGen/x86_64-fp128.c b/clang/test/CodeGen/x86_64-longdouble.c
similarity index 78%
rename from clang/test/CodeGen/x86_64-fp128.c
rename to clang/test/CodeGen/x86_64-longdouble.c
index 0147721f9b6a..8baf4d164912 100644
--- a/clang/test/CodeGen/x86_64-fp128.c
+++ b/clang/test/CodeGen/x86_64-longdouble.c
@@ -4,6 +4,9 @@
 // RUN:    | FileCheck %s --check-prefix=GNU --check-prefix=CHECK
 // RUN: %clang_cc1 -triple x86_64 -emit-llvm -O -o - %s \
 // RUN:    | FileCheck %s --check-prefix=GNU --check-prefix=CHECK
+// NaCl is an example of a target for which long double is the same as double.
+// RUN: %clang_cc1 -triple x86_64-nacl -emit-llvm -O -o - %s \
+// RUN:    | FileCheck %s --check-prefix=NACL --check-prefix=CHECK
 
 // Android uses fp128 for long double but other x86_64 targets use x86_fp80.
 
@@ -19,12 +22,14 @@ long double TestLD(long double x) {
   return x * x;
 // ANDROID: define fp128 @TestLD(fp128 %x)
 // GNU: define x86_fp80 @TestLD(x86_fp80 %x)
+// NACL: define double @TestLD(double %x)
 }
 
 long double _Complex TestLDC(long double _Complex x) {
   return x * x;
 // ANDROID: define void @TestLDC({ fp128, fp128 }* {{.*}}, { fp128, fp128 }* {{.*}} %x)
 // GNU: define { x86_fp80, x86_fp80 } @TestLDC({ x86_fp80, x86_fp80 }* {{.*}} %x)
+// NACL: define { double, double } @TestLDC(double %x{{.*}}, double %x{{.*}})
 }
 
 typedef __builtin_va_list va_list;
@@ -51,14 +56,18 @@ double TestGetVarDouble(va_list ap) {
 
 long double TestGetVarLD(va_list ap) {
   return __builtin_va_arg(ap, long double);
-// fp128 can be passed in memory or in register, but x86_fp80 is in memory.
+// fp128 and double can be passed in memory or in register, but x86_fp80 is in
+// memory.
 // ANDROID: define fp128 @TestGetVarLD(
 // GNU:     define x86_fp80 @TestGetVarLD(
+// NACL:     define double @TestGetVarLD(
 // ANDROID: br label
 // ANDROID: br label
+// NACL: br
 // ANDROID: = phi
 // GNU-NOT: br
 // GNU-NOT: = phi
+// NACL: = phi
 // ANDROID: ret fp128
 // GNU:     ret x86_fp80
 }
@@ -68,10 +77,17 @@ long double _Complex TestGetVarLDC(va_list ap) {
 // Pair of fp128 or x86_fp80 are passed as struct in memory.
 // ANDROID:   define void @TestGetVarLDC({ fp128, fp128 }* {{.*}}, %struct.__va_list_tag*
 // GNU:       define { x86_fp80, x86_fp80 } @TestGetVarLDC(
-// CHECK-NOT: br
-// CHECK-NOT: phi
+// Pair of double can go in SSE registers or memory
+// NACL:       define { double, double } @TestGetVarLDC(
+// ANDROID-NOT: br
+// GNU-NOT: br
+// NACL: br
+// ANDROID-NOT: phi
+// GNU-NOT: phi
+// NACL: phi
 // ANDROID:   ret void
 // GNU:       ret { x86_fp80, x86_fp80 }
+// NACL:       ret { double, double }
 }
 
 void TestVarArg(const char *s, ...);
@@ -100,6 +116,8 @@ void TestPassVarLD(long double x) {
 // ANDROID: call {{.*}} @TestVarArg(i8* {{.*}}, fp128 %x
 // GNU: define void @TestPassVarLD(x86_fp80 %x)
 // GNU: call {{.*}} @TestVarArg(i8* {{.*}}, x86_fp80 %x
+// NACL: define void @TestPassVarLD(double %x)
+// NACL: call {{.*}} @TestVarArg(i8* {{.*}}, double %x
 }
 
 void TestPassVarLDC(long double _Complex x) {
@@ -111,5 +129,7 @@ void TestPassVarLDC(long double _Complex x) {
 // GNU:          define void @TestPassVarLDC({ x86_fp80, x86_fp80 }* {{.*}} %x)
 // GNU:          store x86_fp80 %{{.*}}, x86_fp80* %
 // GNU-NEXT:     store x86_fp80 %{{.*}}, x86_fp80* %
-// GNGNU-NEXT:   call {{.*}} @TestVarArg(i8* {{.*}}, { x86_fp80, x86_fp80 }* {{.*}} %
+// GNU-NEXT:   call {{.*}} @TestVarArg(i8* {{.*}}, { x86_fp80, x86_fp80 }* {{.*}} %
+// NACL:      define void @TestPassVarLDC(double %x{{.*}}, double %x{{.*}})
+// NACL: call {{.*}} @TestVarArg(i8* {{.*}}, double %x{{.*}}, double %x{{.*}})
 }