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AMDGPU/SI: Fix a test in wqm.ll to always use s_cbranch_vcc* 

Summary:
We need to use floating-point compares to ensure that s_cbranch_vcc*
instructions are always generated.  With integer compares, future
optimizations could cause s_cbranch_scc* to be generated instead.

Reviewers: arsenm, nhaehnle

Subscribers: llvm-commits, kzhuravl

Differential Revision: https://reviews.llvm.org/D23401

llvm-svn: 279148
This commit is contained in:
Tom Stellard 2016-08-18 21:21:53 +00:00
parent 6700b4910e
commit a1619cd9aa
1 changed files with 7 additions and 7 deletions
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14
llvm/test/CodeGen/AMDGPU/wqm.ll
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@ -343,13 +343,13 @@ main_body:
; CHECK: s_and_b64 exec, exec, [[LIVE]]
; CHECK: image_store
; CHECK: s_wqm_b64 exec, exec
; CHECK: v_mov_b32_e32 [[CTR:v[0-9]+]], 0
; CHECK-DAG: v_mov_b32_e32 [[CTR:v[0-9]+]], 0
; CHECK-DAG: v_mov_b32_e32 [[SEVEN:v[0-9]+]], 0x40e00000
; CHECK: s_branch [[LOOPHDR:BB[0-9]+_[0-9]+]]
; CHECK: v_add_i32_e32 [[CTR]], vcc, 2, [[CTR]]
; CHECK: v_add_f32_e32 [[CTR]], 2.0, [[CTR]]
; CHECK: [[LOOPHDR]]: ; %loop
; CHECK: v_cmp_lt_i32_e32 vcc, 7, [[CTR]]
; CHECK: v_cmp_lt_f32_e32 vcc, [[SEVEN]], [[CTR]]
; CHECK: s_cbranch_vccz
; CHECK: ; %break
@ -360,15 +360,15 @@ entry:
br label %loop
loop:
%ctr.iv = phi i32 [ 0, %entry ], [ %ctr.next, %body ]
%ctr.iv = phi float [ 0.0, %entry ], [ %ctr.next, %body ]
%c.iv = phi <4 x float> [ %in, %entry ], [ %c.next, %body ]
%cc = icmp sgt i32 %ctr.iv, 7
%cc = fcmp ogt float %ctr.iv, 7.0
br i1 %cc, label %break, label %body
body:
%c.i = bitcast <4 x float> %c.iv to <4 x i32>
%c.next = call <4 x float> @llvm.SI.image.sample.v4i32(<4 x i32> %c.i, <8 x i32> undef, <4 x i32> undef, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
%ctr.next = add i32 %ctr.iv, 2
%ctr.next = fadd float %ctr.iv, 2.0
br label %loop
break: