--- /dev/null
+; RUN: llc -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %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: lxsspx