llvm/test/CodeGen/R600/large-constant-initializer.ll
Tom Stellard b664d47cb0 R600/SI: Store constant initializer data in constant memory
This implements a solution for constant initializers suggested
by Vadim Girlin, where we store the data after the shader code
and then use the S_GETPC instruction to compute its address.

This saves use the trouble of creating a new buffer for constant data
and then having to pass the pointer to the kernel via user SGPRs or the
input buffer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213530 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-21 14:01:14 +00:00

19 lines
449 B
LLVM

; RUN: llc -march=r600 -mcpu=SI < %s
; CHECK: S_ENDPGM
@gv = external unnamed_addr addrspace(2) constant [239 x i32], align 4
define void @opencv_cvtfloat_crash(i32 addrspace(1)* %out, i32 %x) nounwind {
%val = load i32 addrspace(2)* getelementptr ([239 x i32] addrspace(2)* @gv, i64 0, i64 239), align 4
%mul12 = mul nsw i32 %val, 7
br i1 undef, label %exit, label %bb
bb:
%cmp = icmp slt i32 %x, 0
br label %exit
exit:
ret void
}