mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 20:12:56 +02:00
887911c8b0
The code that generates the loop definition operand for phis in the epilog and kernel is incorrect in some cases. In the kernel, when a phi refers to another phi, the code that updates PhiOp2 needs to include the stage difference between the two phis. In the epilog, the check for using the loop definition instead of the phi definition uses the StageDiffAdj value (the difference between the phi stage and the loop definition stage), but the adjustment is not needed to determine if the current stage contains an iteration with the loop definition. Differential Revision: https://reviews.llvm.org/D51167 llvm-svn: 340782
34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=hexagon-unknown-elf -mcpu=hexagonv55 -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
|
|
|
|
; Test that the pipeliner correctly generates the operands in the
|
|
; epilog.
|
|
|
|
; CHECK: loop0
|
|
; CHECK: r{{[0-9]+}} = sfsub([[REG0:r([0-9]+)]],[[REG1:r([0-9]+)]])
|
|
; CHECK: endloop0
|
|
; CHECK: r{{[0-9]+}} = sfsub([[REG0]],[[REG1]])
|
|
; CHECK: r{{[0-9]+}} = sfsub([[REG0]],r{{[0-9]+}})
|
|
|
|
define dso_local void @test(i32 %m) local_unnamed_addr #0 {
|
|
entry:
|
|
%div = sdiv i32 %m, 2
|
|
%sub = add nsw i32 %div, -1
|
|
br label %for.body.prol
|
|
|
|
for.body.prol:
|
|
%i.0106.prol = phi i32 [ undef, %for.body.prol ], [ %sub, %entry ]
|
|
%sr.prol = phi float [ %0, %for.body.prol ], [ undef, %entry ]
|
|
%sr109.prol = phi float [ %sr.prol, %for.body.prol ], [ undef, %entry ]
|
|
%prol.iter = phi i32 [ %prol.iter.sub, %for.body.prol ], [ undef, %entry ]
|
|
%0 = load float, float* undef, align 4
|
|
%sub7.prol = fsub contract float %sr109.prol, %0
|
|
store float %sub7.prol, float* null, align 4
|
|
%prol.iter.sub = add i32 %prol.iter, -1
|
|
%prol.iter.cmp = icmp eq i32 %prol.iter.sub, 0
|
|
br i1 %prol.iter.cmp, label %for.body.prol.loopexit, label %for.body.prol
|
|
|
|
for.body.prol.loopexit:
|
|
unreachable
|
|
}
|
|
|