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llvm-mirror/test/CodeGen/AMDGPU/zero_extend.ll
Matt Arsenault 3a9a1ac61b AMDGPU: Use unsigned compare for eq/ne
For some reason there are both of these available, except
for scalar 64-bit compares which only has u64. I'm not sure
why there are both (I'm guessing it's for the one bit inputs we
don't use), but for consistency always using the
unsigned one.

llvm-svn: 282832
2016-09-30 01:50:20 +00:00

41 lines
1.2 KiB
LLVM

; RUN: llc < %s -march=amdgcn -verify-machineinstrs | FileCheck %s --check-prefix=SI
; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s --check-prefix=SI
; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=R600
; R600: {{^}}test:
; R600: MEM_RAT_CACHELESS STORE_RAW
; R600: MEM_RAT_CACHELESS STORE_RAW
; SI: {{^}}test:
; SI: v_mov_b32_e32 v[[V_ZERO:[0-9]]], 0{{$}}
; SI: buffer_store_dwordx2 v[0:[[V_ZERO]]{{\]}}
define void @test(i64 addrspace(1)* %out, i32 %a, i32 %b, i32 %c) {
entry:
%0 = mul i32 %a, %b
%1 = add i32 %0, %c
%2 = zext i32 %1 to i64
store i64 %2, i64 addrspace(1)* %out
ret void
}
; SI-LABEL: {{^}}testi1toi32:
; SI: v_cndmask_b32
define void @testi1toi32(i32 addrspace(1)* %out, i32 %a, i32 %b) {
entry:
%0 = icmp eq i32 %a, %b
%1 = zext i1 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; SI-LABEL: {{^}}zext_i1_to_i64:
; SI: s_mov_b32 s{{[0-9]+}}, 0
; SI: v_cmp_eq_u32
; SI: v_cndmask_b32
define void @zext_i1_to_i64(i64 addrspace(1)* %out, i32 %a, i32 %b) nounwind {
%cmp = icmp eq i32 %a, %b
%ext = zext i1 %cmp to i64
store i64 %ext, i64 addrspace(1)* %out, align 8
ret void
}