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llvm-project/llvm/test/CodeGen/PowerPC/fma-aggr-FMF.ll

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[DAGCombiner] Initial support for the fast-math flag contract Now alternatively to the TargetOption.AllowFPOpFusion global flag, FMUL->FADD can also use the per operation FMF to allow fusion. The idea here is not to port everything to the new scheme (e.g. fused multiply-and-sub will be ported later) but that this work all the way from clang. The transformation is conditionalized on *both* the FADD and the FMUL having the FMF contract flag. Differential Revision: https://reviews.llvm.org/D31169 llvm-svn: 299096
2017-03-31 02:53:04 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -verify-machineinstrs -mtriple=powerpc64le-linux-gnu | FileCheck %s
define float @can_fma_with_fewer_uses(float %f1, float %f2, float %f3, float %f4) {
; CHECK-LABEL: can_fma_with_fewer_uses:
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; CHECK: # %bb.0:
[DAGCombiner] Initial support for the fast-math flag contract Now alternatively to the TargetOption.AllowFPOpFusion global flag, FMUL->FADD can also use the per operation FMF to allow fusion. The idea here is not to port everything to the new scheme (e.g. fused multiply-and-sub will be ported later) but that this work all the way from clang. The transformation is conditionalized on *both* the FADD and the FMUL having the FMF contract flag. Differential Revision: https://reviews.llvm.org/D31169 llvm-svn: 299096
2017-03-31 02:53:04 +08:00
; CHECK-NEXT: xsmulsp 0, 1, 2
; CHECK-NEXT: fmr 1, 0
; CHECK-NEXT: xsmaddasp 1, 3, 4
; CHECK-NEXT: xsdivsp 1, 0, 1
; CHECK-NEXT: blr
%mul1 = fmul contract float %f1, %f2
%mul2 = fmul contract float %f3, %f4
%add = fadd contract float %mul1, %mul2
%second_use_of_mul1 = fdiv float %mul1, %add
ret float %second_use_of_mul1
}
; There is no contract on the mul with no extra use so we can't fuse that.
; Since we are fusing with the mul with an extra use, the fmul needs to stick
; around beside the fma.
define float @no_fma_with_fewer_uses(float %f1, float %f2, float %f3, float %f4) {
; CHECK-LABEL: no_fma_with_fewer_uses:
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; CHECK: # %bb.0:
Utilize new SDNode flag functionality to expand current support for fma Summary: This patch originated from D47388 and is a proper subset of the originating changes, containing only the fmf optimization guard extensions. Reviewers: spatel, hfinkel, wristow, arsenm, javed.absar, rampitec, nhaehnle, nemanjai Reviewed By: rampitec, nhaehnle Subscribers: tpr, nemanjai, wdng Differential Revision: https://reviews.llvm.org/D47918 llvm-svn: 334876
2018-06-16 08:03:06 +08:00
; CHECK-NEXT: xsmulsp 0, 1, 2
; CHECK-NEXT: fmr 1, 0
; CHECK-NEXT: xsmaddasp 1, 3, 4
; CHECK-NEXT: xsdivsp 1, 0, 1
[DAGCombiner] Initial support for the fast-math flag contract Now alternatively to the TargetOption.AllowFPOpFusion global flag, FMUL->FADD can also use the per operation FMF to allow fusion. The idea here is not to port everything to the new scheme (e.g. fused multiply-and-sub will be ported later) but that this work all the way from clang. The transformation is conditionalized on *both* the FADD and the FMUL having the FMF contract flag. Differential Revision: https://reviews.llvm.org/D31169 llvm-svn: 299096
2017-03-31 02:53:04 +08:00
; CHECK-NEXT: blr
%mul1 = fmul contract float %f1, %f2
%mul2 = fmul float %f3, %f4
%add = fadd contract float %mul1, %mul2
%second_use_of_mul1 = fdiv float %mul1, %add
ret float %second_use_of_mul1
}