https://bugs.llvm.org/show_bug.cgi?id=39062
Bug ID: 39062
Summary: bracket vs. vector-cast precedence for OpenCL
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: OpenCL
Assignee: unassignedclangb...@nondot.org
Reporter: pjc...@gmail.com
CC: llvm-bugs@lists.llvm.org
Created attachment 20911
--> https://bugs.llvm.org/attachment.cgi?id=20911&action=edit
.cl precedence difference
We ran into the following difference. The behavior here seemed to change
between LLVM 4 and LLVM 5.
On the attached, there is a difference in compiling:
typedef int int4 __attribute__((ext_vector_type(4)));
void s(int4 *x, const int* y) {
x[0] = (int4)(y)[0];
}
with clang -x c vs. clang -x cl
clang -O2 -x c -S -emit-llvm gives:
%3 = load i32, i32* %1, align 4, !tbaa !3
%4 = insertelement <4 x i32> undef, i32 %3, i32 0
%5 = shufflevector <4 x i32> %4, <4 x i32> undef, <4 x i32> zeroinitializer
while clang -O2 -x cl -S -emit-llvm gives:
%3 = ptrtoint i32* %1 to i32
%4 = insertelement <4 x i32> undef, i32 %3, i32 0
%5 = shufflevector <4 x i32> %4, <4 x i32> undef, <4 x i32> zeroinitializer
Is this intentional?
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