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AMDGPU: Precommit test showing extra instructions are introduced

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Matt Arsenault 2019-12-31 13:51:52 -05:00 committed by Matt Arsenault
parent b65ca8e5db
commit 64cf26548a
1 changed files with 27 additions and 0 deletions
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llvm/test/CodeGen/AMDGPU/fneg-fold-legalize-dag-increase-insts.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -enable-no-signed-zeros-fp-math=true < %s | FileCheck %s
; FIXME: This should be the same when the extra instructions are fixed
; XUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -enable-no-signed-zeros-fp-math=false < %s | FileCheck %s
; no-signed-zeros-fp-math should not increase the number of
; instructions emitted.
define { double, double } @testfn(double %arg, double %arg1, double %arg2) {
; CHECK-LABEL: testfn:
; CHECK: ; %bb.0: ; %bb
; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; CHECK-NEXT: v_add_f64 v[6:7], v[4:5], -v[0:1]
; CHECK-NEXT: v_add_f64 v[4:5], v[0:1], -v[4:5]
; CHECK-NEXT: v_add_f64 v[0:1], v[6:7], -v[2:3]
; CHECK-NEXT: v_add_f64 v[2:3], -v[2:3], v[4:5]
; CHECK-NEXT: s_setpc_b64 s[30:31]
bb:
%tmp = fsub fast double 0.000000e+00, %arg1
%tmp3 = fsub fast double %arg2, %arg
%tmp4 = fadd fast double %tmp3, %tmp
%tmp5 = fsub fast double %tmp, %tmp3
%tmp6 = insertvalue { double, double } undef, double %tmp4, 0
%tmp7 = insertvalue { double, double } %tmp6, double %tmp5, 1
ret { double, double } %tmp7
}