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llvm-project/llvm/test/CodeGen/X86/mmx-bitcast-fold.ll

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[EarlyCSE] Verify hash code in regression tests As discussed in D86843, -earlycse-debug-hash should be used in more regression tests to catch inconsistency between the hashing and the equivalence check. Differential Revision: https://reviews.llvm.org/D86863
2020-08-31 07:17:43 +08:00
; RUN: opt -mtriple=x86_64-- -early-cse -earlycse-debug-hash < %s -S | FileCheck %s
Don't fold double constant to an integer if dest type not integral Summary: I encountered this issue when constant folding during inlining tried to fold away a bitcast of a double to an x86_mmx, which is not an integral type. The test case exposes the same issue with a smaller code snippet during early CSE. Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D18528 llvm-svn: 265367
2016-04-05 07:50:46 +08:00
; CHECK: @foo(x86_mmx bitcast (double 0.000000e+00 to x86_mmx))
define void @bar() {
entry:
%0 = bitcast double 0.0 to x86_mmx
%1 = call x86_mmx @foo(x86_mmx %0)
ret void
}
declare x86_mmx @foo(x86_mmx)