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[InstCombine] Add test for insertelementinsts with constants. 

Added a tests that shows that several insertelementinsts with constant
indexes/data are not folded into a single shuffleinst.

llvm-svn: 280474
This commit is contained in:
Alexey Bataev 2016-09-02 09:00:53 +00:00
parent d8dfeec019
commit ed27d69037
1 changed files with 77 additions and 0 deletions
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llvm/test/Transforms/InstCombine/vector_insertelt_shuffle.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
define<4 x float> @foo(<4 x float> %x) {
%ins1 = insertelement<4 x float> %x, float 1.0, i32 1
%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
ret<4 x float> %ins2
}
; FIXME: insertelements should fold to shuffle
; CHECK-LABEL: @foo
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 1.000000e+00, i32 1
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 2.000000e+00, i32 2
; CHECK-NEXT: ret <4 x float> %
define<4 x float> @bar(<4 x float> %x, float %a) {
%ins1 = insertelement<4 x float> %x, float %a, i32 1
%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
ret<4 x float> %ins2
}
; CHECK-LABEL: @bar
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float %{{.+}}, i32 1
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 2.000000e+00, i32 2
; CHECK-NEXT: ret <4 x float> %
define<4 x float> @baz(<4 x float> %x, i32 %a) {
%ins1 = insertelement<4 x float> %x, float 1.0, i32 1
%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 %a
ret<4 x float> %ins2
}
; CHECK-LABEL: @baz
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 1.000000e+00, i32 1
; CHECK-NEXT: insertelement <4 x float> %ins1, float 2.000000e+00, i32 %
; CHECK-NEXT: ret <4 x float> %
define<4 x float> @bazz(<4 x float> %x, i32 %a) {
%ins1 = insertelement<4 x float> %x, float 1.0, i32 3
%ins2 = insertelement<4 x float> %ins1, float 5.0, i32 %a
%ins3 = insertelement<4 x float> %ins2, float 3.0, i32 2
%ins4 = insertelement<4 x float> %ins3, float 1.0, i32 1
%ins5 = insertelement<4 x float> %ins4, float 2.0, i32 2
%ins6 = insertelement<4 x float> %ins5, float 7.0, i32 %a
ret<4 x float> %ins6
}
; FIXME: insertelements should fold to shuffle
; CHECK-LABEL: @bazz
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 1.000000e+00, i32 3
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 5.000000e+00, i32 %
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 1.000000e+00, i32 1
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 2.000000e+00, i32 2
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 7.000000e+00, i32 %
; CHECK-NEXT: ret <4 x float> %
define<4 x float> @bazzz(<4 x float> %x) {
%ins1 = insertelement<4 x float> %x, float 1.0, i32 5
%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
ret<4 x float> %ins2
}
; CHECK-LABEL: @bazzz
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 2.000000e+00, i32 2
; CHECK-NEXT: ret <4 x float> %
define<4 x float> @bazzzz(<4 x float> %x) {
%ins1 = insertelement<4 x float> %x, float 1.0, i32 undef
%ins2 = insertelement<4 x float> %ins1, float 2.0, i32 2
ret<4 x float> %ins2
}
; CHECK-LABEL: @bazzzz
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 1.000000e+00, i32 undef
; CHECK-NEXT: insertelement <4 x float> %{{.+}}, float 2.000000e+00, i32 2
; CHECK-NEXT: ret <4 x float> %