From ed39f58390c72bc8c8d7358b286f5c7860f553e2 Mon Sep 17 00:00:00 2001 From: Daniel Sanders Date: Thu, 4 Sep 2014 13:28:14 +0000 Subject: [mips] Zero-sized structs cannot be ignored in MipsABIInfo::classifyReturnType() for O32 Summary: They are returned indirectly which causes the other arguments to move to the next argument slot. With this, utils/ABITest does not discover any failing cases in the first 500 attempts on big/little endian for O32. Previously some of these failed. Also tested N32/N64 little endian (big endian has other known issues) with no issues. Reviewers: atanasyan Reviewed By: atanasyan Subscribers: atanasyan, cfe-commits Differential Revision: http://reviews.llvm.org/D4811 llvm-svn: 217147 --- clang/test/CodeGen/mips-zero-sized-struct.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 clang/test/CodeGen/mips-zero-sized-struct.c (limited to 'clang/test') diff --git a/clang/test/CodeGen/mips-zero-sized-struct.c b/clang/test/CodeGen/mips-zero-sized-struct.c new file mode 100644 index 00000000000..afff3b41d83 --- /dev/null +++ b/clang/test/CodeGen/mips-zero-sized-struct.c @@ -0,0 +1,16 @@ +// RUN: %clang -target mips-unknown-linux-gnu -S -emit-llvm -o - %s | FileCheck -check-prefix=O32 %s +// RUN: %clang -target mipsel-unknown-linux-gnu -S -emit-llvm -o - %s | FileCheck -check-prefix=O32 %s +// RUN: %clang -target mips64-unknown-linux-gnu -S -emit-llvm -o - %s -mabi=n32 | FileCheck -check-prefix=N32 %s +// RUN: %clang -target mips64el-unknown-linux-gnu -S -emit-llvm -o - %s -mabi=n32 | FileCheck -check-prefix=N32 %s +// RUN: %clang -target mips64-unknown-linux-gnu -S -emit-llvm -o - %s | FileCheck -check-prefix=N64 %s +// RUN: %clang -target mips64el-unknown-linux-gnu -S -emit-llvm -o - %s | FileCheck -check-prefix=N64 %s + +// O32: define void @fn28(%struct.T2* noalias sret %agg.result, i8 signext %arg0) +// N32: define void @fn28(i8 signext %arg0) +// N64: define void @fn28(i8 signext %arg0) + +typedef struct T2 { } T2; +T2 T2_retval; +T2 fn28(char arg0) { + return T2_retval; +} -- cgit v1.2.3