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- ; RUN: opt -slp-vectorizer < %s -S -mtriple="x86_64-grtev3-linux-gnu" -mcpu=corei7-avx | FileCheck %s
- target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
- target triple = "x86_64-grtev3-linux-gnu"
- ; We used to crash on this example because we were building a constant
- ; expression during vectorization and the vectorizer expects instructions
- ; as elements of the vectorized tree.
- ; CHECK-LABEL: @test
- ; PR19621
- define void @test() {
- bb279:
- br label %bb283
- bb283:
- %Av.sroa.8.0 = phi float [ undef, %bb279 ], [ %tmp315, %exit ]
- %Av.sroa.5.0 = phi float [ undef, %bb279 ], [ %tmp319, %exit ]
- %Av.sroa.3.0 = phi float [ undef, %bb279 ], [ %tmp307, %exit ]
- %Av.sroa.0.0 = phi float [ undef, %bb279 ], [ %tmp317, %exit ]
- br label %bb284
- bb284:
- %tmp7.i = fpext float %Av.sroa.3.0 to double
- %tmp8.i = fsub double %tmp7.i, undef
- %tmp9.i = fsub double %tmp8.i, undef
- %tmp17.i = fpext float %Av.sroa.8.0 to double
- %tmp19.i = fsub double %tmp17.i, undef
- %tmp20.i = fsub double %tmp19.i, undef
- br label %bb21.i
- bb21.i:
- br i1 undef, label %bb22.i, label %exit
- bb22.i:
- %tmp24.i = fadd double undef, %tmp9.i
- %tmp26.i = fadd double undef, %tmp20.i
- br label %bb32.i
- bb32.i:
- %xs.0.i = phi double [ %tmp24.i, %bb22.i ], [ 0.000000e+00, %bb32.i ]
- %ys.0.i = phi double [ %tmp26.i, %bb22.i ], [ 0.000000e+00, %bb32.i ]
- br i1 undef, label %bb32.i, label %bb21.i
- exit:
- %tmp303 = fpext float %Av.sroa.0.0 to double
- %tmp304 = fmul double %tmp303, undef
- %tmp305 = fadd double undef, %tmp304
- %tmp306 = fadd double %tmp305, undef
- %tmp307 = fptrunc double %tmp306 to float
- %tmp311 = fpext float %Av.sroa.5.0 to double
- %tmp312 = fmul double %tmp311, 0.000000e+00
- %tmp313 = fadd double undef, %tmp312
- %tmp314 = fadd double %tmp313, undef
- %tmp315 = fptrunc double %tmp314 to float
- %tmp317 = fptrunc double undef to float
- %tmp319 = fptrunc double undef to float
- br label %bb283
- }
- ; Make sure that we probably handle constant folded vectorized trees. The
- ; vectorizer starts at the type (%t2, %t3) and wil constant fold the tree.
- ; The code that handles insertelement instructions must handle this.
- define <4 x double> @constant_folding() {
- entry:
- %t0 = fadd double 1.000000e+00 , 0.000000e+00
- %t1 = fadd double 1.000000e+00 , 1.000000e+00
- %t2 = fmul double %t0, 1.000000e+00
- %i1 = insertelement <4 x double> undef, double %t2, i32 1
- %t3 = fmul double %t1, 1.000000e+00
- %i2 = insertelement <4 x double> %i1, double %t3, i32 0
- ret <4 x double> %i2
- }
- ; CHECK-LABEL: @constant_folding
- ; CHECK: %[[V0:.+]] = extractelement <2 x double> <double 1.000000e+00, double 2.000000e+00>, i32 0
- ; CHECK: %[[V1:.+]] = insertelement <4 x double> undef, double %[[V0]], i32 1
- ; CHECK: %[[V2:.+]] = extractelement <2 x double> <double 1.000000e+00, double 2.000000e+00>, i32 1
- ; CHECK: %[[V3:.+]] = insertelement <4 x double> %[[V1]], double %[[V2]], i32 0
- ; CHECK: ret <4 x double> %[[V3]]
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