forked from OSchip/llvm-project
[InstCombine] add explanatory comments to tests; NFC
llvm-svn: 292063
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llvm/test/Transforms/InstCombine
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@ -61,6 +61,10 @@ define i32 @test5(i32 %x) {
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ret i32 %tmp.4
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}
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; If the shift amount equals the difference in width of the destination
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; and source scalar types:
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; ashr (shl (zext X), C), C --> sext X
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define i32 @test6(i16 %P) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[TMP_5:%.*]] = sext i16 %P to i32
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@ -72,6 +76,8 @@ define i32 @test6(i16 %P) {
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ret i32 %tmp.5
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}
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; FIXME: Vectors should get the same fold as above.
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define <2 x i32> @test6_splat_vec(<2 x i12> %P) {
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; CHECK-LABEL: @test6_splat_vec(
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; CHECK-NEXT: [[Z:%.*]] = zext <2 x i12> %P to <2 x i32>
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