ret <4 x float> %rb
}
+; Make sure that vectorization happens even if insertelements operations
+; must be rescheduled. The case here is from compiling Julia.
+define <4 x float> @reschedule_extract(<4 x float> %a, <4 x float> %b) {
+; CHECK-LABEL: @reschedule_extract(
+; CHECK: %1 = fadd <4 x float> %a, %b
+ %a0 = extractelement <4 x float> %a, i32 0
+ %b0 = extractelement <4 x float> %b, i32 0
+ %c0 = fadd float %a0, %b0
+ %v0 = insertelement <4 x float> undef, float %c0, i32 0
+ %a1 = extractelement <4 x float> %a, i32 1
+ %b1 = extractelement <4 x float> %b, i32 1
+ %c1 = fadd float %a1, %b1
+ %v1 = insertelement <4 x float> %v0, float %c1, i32 1
+ %a2 = extractelement <4 x float> %a, i32 2
+ %b2 = extractelement <4 x float> %b, i32 2
+ %c2 = fadd float %a2, %b2
+ %v2 = insertelement <4 x float> %v1, float %c2, i32 2
+ %a3 = extractelement <4 x float> %a, i32 3
+ %b3 = extractelement <4 x float> %b, i32 3
+ %c3 = fadd float %a3, %b3
+ %v3 = insertelement <4 x float> %v2, float %c3, i32 3
+ ret <4 x float> %v3
+}
+
; Check that cost model for vectorization takes credit for
; instructions that are erased.
define <4 x float> @take_credit(<4 x float> %a, <4 x float> %b) {
; ZEROTHRESH-LABEL: @take_credit(
-; ZEROTHRESH-CHECK: %1 = fadd <4 x float> %a, %b
+; ZEROTHRESH: %1 = fadd <4 x float> %a, %b
%a0 = extractelement <4 x float> %a, i32 0
%b0 = extractelement <4 x float> %b, i32 0
%c0 = fadd float %a0, %b0
ret <4 x float> %v3
}
+; Make sure we handle multiple trees that feed one build vector correctly.
+define <4 x double> @multi_tree(double %w, double %x, double %y, double %z) {
+entry:
+ %t0 = fadd double %w , 0.000000e+00
+ %t1 = fadd double %x , 1.000000e+00
+ %t2 = fadd double %y , 2.000000e+00
+ %t3 = fadd double %z , 3.000000e+00
+ %t4 = fmul double %t0, 1.000000e+00
+ %i1 = insertelement <4 x double> undef, double %t4, i32 3
+ %t5 = fmul double %t1, 1.000000e+00
+ %i2 = insertelement <4 x double> %i1, double %t5, i32 2
+ %t6 = fmul double %t2, 1.000000e+00
+ %i3 = insertelement <4 x double> %i2, double %t6, i32 1
+ %t7 = fmul double %t3, 1.000000e+00
+ %i4 = insertelement <4 x double> %i3, double %t7, i32 0
+ ret <4 x double> %i4
+}
+; CHECK-LABEL: @multi_tree
+; CHECK-DAG: %[[V0:.+]] = insertelement <2 x double> undef, double %w, i32 0
+; CHECK-DAG: %[[V1:.+]] = insertelement <2 x double> %[[V0]], double %x, i32 1
+; CHECK-DAG: %[[V2:.+]] = fadd <2 x double> %[[V1]], <double 0.000000e+00, double 1.000000e+00>
+; CHECK-DAG: %[[V3:.+]] = insertelement <2 x double> undef, double %y, i32 0
+; CHECK-DAG: %[[V4:.+]] = insertelement <2 x double> %[[V3]], double %z, i32 1
+; CHECK-DAG: %[[V5:.+]] = fadd <2 x double> %[[V4]], <double 2.000000e+00, double 3.000000e+00>
+; CHECK-DAG: %[[V6:.+]] = fmul <2 x double> <double 1.000000e+00, double 1.000000e+00>, %[[V2]]
+; CHECK-DAG: %[[V7:.+]] = extractelement <2 x double> %[[V6]], i32 0
+; CHECK-DAG: %[[I1:.+]] = insertelement <4 x double> undef, double %[[V7]], i32 3
+; CHECK-DAG: %[[V8:.+]] = extractelement <2 x double> %[[V6]], i32 1
+; CHECK-DAG: %[[I2:.+]] = insertelement <4 x double> %[[I1]], double %[[V8]], i32 2
+; CHECK-DAG: %[[V9:.+]] = fmul <2 x double> <double 1.000000e+00, double 1.000000e+00>, %[[V5]]
+; CHECK-DAG: %[[V10:.+]] = extractelement <2 x double> %[[V9]], i32 0
+; CHECK-DAG: %[[I3:.+]] = insertelement <4 x double> %i2, double %[[V10]], i32 1
+; CHECK-DAG: %[[V11:.+]] = extractelement <2 x double> %[[V9]], i32 1
+; CHECK-DAG: %[[I4:.+]] = insertelement <4 x double> %i3, double %[[V11]], i32 0
+; CHECK: ret <4 x double> %[[I4]]
+
attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }