| ; 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]] |