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[InstCombine] Add test cases for an icmp combine that is missing support for splat vector constants. 

llvm-svn: 340144
This commit is contained in:
Craig Topper 2018-08-19 18:03:34 +00:00
parent 5b936ec89e
commit 5f695cc1e9
1 changed files with 51 additions and 0 deletions
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51
llvm/test/Transforms/InstCombine/icmp.ll
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@ -99,6 +99,17 @@ define i1 @test7(i32 %x) {
ret i1 %b
}
define <2 x i1> @test7_vec(<2 x i32> %x) {
; CHECK-LABEL: @test7_vec(
; CHECK-NEXT: [[A:%.*]] = add <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
; CHECK-NEXT: [[B:%.*]] = icmp ult <2 x i32> [[A]], [[X]]
; CHECK-NEXT: ret <2 x i1> [[B]]
;
%a = add <2 x i32> %x, <i32 -1, i32 -1>
%b = icmp ult <2 x i32> %a, %x
ret <2 x i1> %b
}
define i1 @test8(i32 %x) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: ret i1 false
@ -108,6 +119,15 @@ define i1 @test8(i32 %x) {
ret i1 %b
}
define <2 x i1> @test8_vec(<2 x i32> %x) {
; CHECK-LABEL: @test8_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%a = add <2 x i32> %x, <i32 -1, i32 -1>
%b = icmp eq <2 x i32> %a, %x
ret <2 x i1> %b
}
define i1 @test9(i32 %x) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: [[B:%.*]] = icmp ugt i32 %x, 1
@ -118,6 +138,17 @@ define i1 @test9(i32 %x) {
ret i1 %b
}
define <2 x i1> @test9_vec(<2 x i32> %x) {
; CHECK-LABEL: @test9_vec(
; CHECK-NEXT: [[A:%.*]] = add <2 x i32> [[X:%.*]], <i32 -2, i32 -2>
; CHECK-NEXT: [[B:%.*]] = icmp ult <2 x i32> [[A]], [[X]]
; CHECK-NEXT: ret <2 x i1> [[B]]
;
%a = add <2 x i32> %x, <i32 -2, i32 -2>
%b = icmp ugt <2 x i32> %x, %a
ret <2 x i1> %b
}
define i1 @test10(i32 %x) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: [[B:%.*]] = icmp ne i32 %x, -2147483648
@ -128,6 +159,17 @@ define i1 @test10(i32 %x) {
ret i1 %b
}
define <2 x i1> @test10_vec(<2 x i32> %x) {
; CHECK-LABEL: @test10_vec(
; CHECK-NEXT: [[A:%.*]] = add <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
; CHECK-NEXT: [[B:%.*]] = icmp slt <2 x i32> [[A]], [[X]]
; CHECK-NEXT: ret <2 x i1> [[B]]
;
%a = add <2 x i32> %x, <i32 -1, i32 -1>
%b = icmp slt <2 x i32> %a, %x
ret <2 x i1> %b
}
define i1 @test11(i32 %x) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: ret i1 true
@ -137,6 +179,15 @@ define i1 @test11(i32 %x) {
ret i1 %b
}
define <2 x i1> @test11_vec(<2 x i32> %x) {
; CHECK-LABEL: @test11_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%a = add nsw <2 x i32> %x, <i32 8, i32 8>
%b = icmp slt <2 x i32> %x, %a
ret <2 x i1> %b
}
; PR6195
define i1 @test12(i1 %A) {
; CHECK-LABEL: @test12(