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llvm-mirror/test/CodeGen/PowerPC/pr25157.ll
Zi Xuan Wu 699d18eb82 [PowerPC] Fix assert from machine verify pass that missing undef register flag
Fix assert about using an undefined physical register in machine instruction verify pass. 
The reason is that register flag undef is missing when doing transformation from If Conversion Pass.

```
Bad machine code: Using an undefined physical register 
- function:    func_65
- basic block: %bb.0 entry (0x10024740738)
- instruction: BCLR killed $cr5lt, implicit $lr8, implicit $rm, implicit undef $x3
- operand 0:   killed $cr5lt
LLVM ERROR: Found 1 machine code errors.
```

There are also other existing testcases with same issue. So I add -verify-machineinstrs option to open verifying.

Differential Revision: https://reviews.llvm.org/D55408

llvm-svn: 348566
2018-12-07 05:25:16 +00:00

63 lines
3.0 KiB
LLVM

; RUN: llc -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux-gnu < %s -verify-machineinstrs | FileCheck %s
; RUN: llc -mcpu=pwr9 -mtriple=powerpc64le-unknown-linux-gnu < %s -verify-machineinstrs | FileCheck \
; RUN: --check-prefix=CHECK-P9 %s
; Verify correct generation of an lxsspx rather than an invalid optimization
; to lxvdsx. Bugpoint-reduced test from Eric Schweitz.
%struct.BSS38.51.4488.9911.14348.16813.20264.24701.28152.31603.35054.39491.44914.45407.46393.46886.47872.49351.49844.50830.51323.52309.53295.53788.54281.55267.55760.59211.61625 = type <{ [28 x i8] }>
%struct_main1_2_.491.4928.10351.14788.17253.20704.25141.28592.32043.35494.39931.45354.45847.46833.47326.48312.49791.50284.51270.51763.52749.53735.54228.54721.55707.56200.59651.61626 = type <{ [64 x i8] }>
@.BSS38 = external global %struct.BSS38.51.4488.9911.14348.16813.20264.24701.28152.31603.35054.39491.44914.45407.46393.46886.47872.49351.49844.50830.51323.52309.53295.53788.54281.55267.55760.59211.61625, align 32
@_main1_2_ = external global %struct_main1_2_.491.4928.10351.14788.17253.20704.25141.28592.32043.35494.39931.45354.45847.46833.47326.48312.49791.50284.51270.51763.52749.53735.54228.54721.55707.56200.59651.61626, section ".comm", align 16
define void @aercalc_() {
L.entry:
br i1 undef, label %L.LB38_2426, label %L.LB38_2911
L.LB38_2911:
br i1 undef, label %L.LB38_2140, label %L.LB38_2640
L.LB38_2640:
unreachable
L.LB38_2426:
br i1 undef, label %L.LB38_2438, label %L.LB38_2920
L.LB38_2920:
br i1 undef, label %L.LB38_2438, label %L.LB38_2921
L.LB38_2921:
br label %L.LB38_2140
L.LB38_2140:
ret void
L.LB38_2438:
br i1 undef, label %L.LB38_2451, label %L.LB38_2935
L.LB38_2935:
br i1 undef, label %L.LB38_2451, label %L.LB38_2936
L.LB38_2936:
unreachable
L.LB38_2451:
br i1 undef, label %L.LB38_2452, label %L.LB38_2937
L.LB38_2937:
unreachable
L.LB38_2452:
%0 = load float, float* bitcast (i8* getelementptr inbounds (%struct.BSS38.51.4488.9911.14348.16813.20264.24701.28152.31603.35054.39491.44914.45407.46393.46886.47872.49351.49844.50830.51323.52309.53295.53788.54281.55267.55760.59211.61625, %struct.BSS38.51.4488.9911.14348.16813.20264.24701.28152.31603.35054.39491.44914.45407.46393.46886.47872.49351.49844.50830.51323.52309.53295.53788.54281.55267.55760.59211.61625* @.BSS38, i64 0, i32 0, i64 16) to float*), align 16
%1 = fpext float %0 to double
%2 = insertelement <2 x double> undef, double %1, i32 1
store <2 x double> %2, <2 x double>* bitcast (i8* getelementptr inbounds (%struct_main1_2_.491.4928.10351.14788.17253.20704.25141.28592.32043.35494.39931.45354.45847.46833.47326.48312.49791.50284.51270.51763.52749.53735.54228.54721.55707.56200.59651.61626, %struct_main1_2_.491.4928.10351.14788.17253.20704.25141.28592.32043.35494.39931.45354.45847.46833.47326.48312.49791.50284.51270.51763.52749.53735.54228.54721.55707.56200.59651.61626* @_main1_2_, i64 0, i32 0, i64 32) to <2 x double>*), align 16
unreachable
}
; CHECK-LABEL: @aercalc_
; CHECK: lfs
; CHECK-P9-LABEL: @aercalc_
; CHECK-P9: lfs