From 1d5b6bd0b8ee0cad2a92f45245b5fbbf23c48ef3 Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Fri, 9 Feb 2018 09:01:30 +0000 Subject: Merging r324594: ------------------------------------------------------------------------ r324594 | aivchenk | 2018-02-08 12:15:21 +0100 (Thu, 08 Feb 2018) | 17 lines Fix for #31362 - ms_abi is implemented incorrectly for values >=16 bytes. Summary: This patch is a fix for following issue: https://bugs.llvm.org/show_bug.cgi?id=31362 The problem was caused by front end lowering C calling conventions without taking into account calling conventions enforced by attribute. In this case win64cc was no correctly lowered on targets other than Windows. Reviewed By: rnk (Reid Kleckner) Differential Revision: https://reviews.llvm.org/D43016 Author: belickim ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_60@324718 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/ms_abi.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'test') diff --git a/test/CodeGen/ms_abi.c b/test/CodeGen/ms_abi.c index 407087e409..7486166c78 100644 --- a/test/CodeGen/ms_abi.c +++ b/test/CodeGen/ms_abi.c @@ -146,3 +146,16 @@ void __attribute__((sysv_abi)) f6(__builtin_ms_va_list ap) { // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] } + +// This test checks if structs are passed according to Win64 calling convention +// when it's enforced by __attribute((ms_abi)). +struct i128 { + unsigned long long a; + unsigned long long b; +}; + +__attribute__((ms_abi)) struct i128 f7(struct i128 a) { + // WIN64: define void @f7(%struct.i128* noalias sret %agg.result, %struct.i128* %a) + // FREEBSD: define win64cc void @f7(%struct.i128* noalias sret %agg.result, %struct.i128* %a) + return a; +} -- cgit v1.2.3