486ed88533
As discussed in http://lists.llvm.org/pipermail/llvm-dev/2020-July/143801.html. Currently no users outside of unit tests. Replace all instances in tests of -constprop with -instsimplify. Notable changes in tests: * vscale.ll - @llvm.sadd.sat.nxv16i8 is evaluated by instsimplify, use a fake intrinsic instead * InsertElement.ll - insertelement undef is removed by instsimplify in @insertelement_undef llvm/test/Transforms/ConstProp moved to llvm/test/Transforms/InstSimplify/ConstProp Reviewed By: lattner, nikic Differential Revision: https://reviews.llvm.org/D85159
41 lines
1010 B
LLVM
41 lines
1010 B
LLVM
; RUN: opt < %s -instsimplify -S | FileCheck %s
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; Overflow on a float to int or int to float conversion is undefined (PR21130).
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define i8 @overflow_fptosi() {
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; CHECK-LABEL: @overflow_fptosi(
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; CHECK-NEXT: ret i8 undef
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;
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%i = fptosi double 1.56e+02 to i8
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ret i8 %i
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}
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define i8 @overflow_fptoui() {
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; CHECK-LABEL: @overflow_fptoui(
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; CHECK-NEXT: ret i8 undef
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;
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%i = fptoui double 2.56e+02 to i8
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ret i8 %i
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}
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; The maximum float is approximately 2 ** 128 which is 3.4E38.
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; The constant below is 4E38. Use a 130 bit integer to hold that
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; number; 129-bits for the value + 1 bit for the sign.
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define float @overflow_uitofp() {
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; CHECK-LABEL: @overflow_uitofp(
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; CHECK-NEXT: ret float 0x7FF0000000000000
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;
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%i = uitofp i130 400000000000000000000000000000000000000 to float
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ret float %i
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}
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define float @overflow_sitofp() {
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; CHECK-LABEL: @overflow_sitofp(
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; CHECK-NEXT: ret float 0x7FF0000000000000
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;
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%i = sitofp i130 400000000000000000000000000000000000000 to float
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ret float %i
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}
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