21 lines
589 B
LLVM
21 lines
589 B
LLVM
; This testcase was distilled from 132.ijpeg. Bsaically we cannot fold the
|
|
; load into the sub instruction here as it induces a cycle in the dag, which
|
|
; is invalid code (there is no correct way to order the instruction). Check
|
|
; that we do not fold the load into the sub.
|
|
|
|
; RUN: llc < %s -mtriple=i686-- | FileCheck %s
|
|
|
|
@GLOBAL = external global i32
|
|
|
|
define i32 @test(i32* %P1, i32* %P2, i32* %P3) nounwind {
|
|
; CHECK-LABEL: test:
|
|
entry:
|
|
%L = load i32, i32* @GLOBAL
|
|
store i32 12, i32* %P2
|
|
%Y = load i32, i32* %P3
|
|
%Z = sub i32 %Y, %L
|
|
ret i32 %Z
|
|
; CHECK-NOT: {{sub.*GLOBAL}}
|
|
}
|
|
|