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[InstCombine] add tests for extractelement; NFC

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There are folds under visitExtractElementInst() that don't appear
to have any test coverage, so adding a few basic cases here.

llvm-svn: 342740
This commit is contained in:
Sanjay Patel 2018-09-21 14:43:49 +00:00
parent 5c6ce4adfa
commit 99ef9d6383
1 changed files with 28 additions and 0 deletions
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28
test/Transforms/InstCombine/scalarization.ll
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@ -56,3 +56,31 @@ define float @extract_element_constant_index(<4 x float> %x) {
ret float %r
}
define float @extract_element_variable_index(<4 x float> %x, i32 %y) {
; CHECK-LABEL: @extract_element_variable_index(
; CHECK-NEXT: [[R_LHS:%.*]] = extractelement <4 x float> [[X:%.*]], i32 [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = fadd float [[R_LHS]], 1.000000e+00
; CHECK-NEXT: ret float [[R]]
;
%add = fadd <4 x float> %x, <float 1.0, float 1.0, float 1.0, float 1.0>
%r = extractelement <4 x float> %add, i32 %y
ret float %r
}
define float @extract_element_splat_constant_vector_variable_index(i32 %y) {
; CHECK-LABEL: @extract_element_splat_constant_vector_variable_index(
; CHECK-NEXT: ret float 2.000000e+00
;
%r = extractelement <4 x float> <float 2.0, float 2.0, float 2.0, float 2.0>, i32 %y
ret float %r
}
define float @extract_element_constant_vector_variable_index(i32 %y) {
; CHECK-LABEL: @extract_element_constant_vector_variable_index(
; CHECK-NEXT: [[R:%.*]] = extractelement <4 x float> <float 1.000000e+00, float 2.000000e+00, float 3.000000e+00, float 4.000000e+00>, i32 [[Y:%.*]]
; CHECK-NEXT: ret float [[R]]
;
%r = extractelement <4 x float> <float 1.0, float 2.0, float 3.0, float 4.0>, i32 %y
ret float %r
}