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[Sparc] Complex return value ABI compliance. 

According to the Sparc V8 ABI, complex numbers should be passed and returned as pairs of registers:

https://docs.oracle.com/cd/E26502_01/html/E28387/gentextid-2734.html

This fix ensures this is the case. Without this, complex numbers are returned as a struct of two floats, which breaks the ABI rules.

Differential Review: http://reviews.llvm.org/D20955

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@272148 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Dewhurst 2016-06-08 14:46:05 +00:00
parent ac13d7e4fb
commit 83056896e6
1 changed files with 19 additions and 0 deletions
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test/CodeGen/sparcv8-abi.c Normal file
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// RUN: %clang_cc1 -triple sparc-unknown-unknown -emit-llvm %s -o - | FileCheck %s
// CHECK-LABEL: define { float, float } @p({ float, float }* byval align 4 %a, { float, float }* byval align 4 %b) #0 {
float __complex__
p (float __complex__ a, float __complex__ b)
{
}
// CHECK-LABEL: define { double, double } @q({ double, double }* byval align 8 %a, { double, double }* byval align 8 %b) #0 {
double __complex__
q (double __complex__ a, double __complex__ b)
{
}
// CHECK-LABEL: define { i64, i64 } @r({ i64, i64 }* byval align 8 %a, { i64, i64 }* byval align 8 %b) #0 {
long long __complex__
r (long long __complex__ a, long long __complex__ b)
{
}