blob: f09d95cb1f53a81628a453a177df4f4fd77e855a [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=s390x-linux-gnu -pre-RA-sched=list-ilp -disable-sched-live-uses=false | FileCheck %s
target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
%struct.a = type { i16, i32 }
@e = dso_local global %struct.a { i16 9, i32 0 }, align 8
@f = dso_local local_unnamed_addr global ptr @e, align 8
@d = dso_local local_unnamed_addr global i32 0, align 4
; This shows a miscompile caused by merging truncated
; stores if the store of 0 (sthrl) to 'e' happens before
; a 64-bit store (stg) of r0. The store of r0 can follow
; the store to 'e' only if it is a 32-bit store (st).
define signext i32 @main() {
; CHECK-LABEL: main:
; CHECK: # %bb.0:
; CHECK-NEXT: lgrl %r0, e
; CHECK-NEXT: lgrl %r1, f
; CHECK-NEXT: srlg %r2, %r0, 32
; CHECK-NEXT: st %r2, 0(%r1)
; CHECK-NEXT: lhi %r2, 0
; CHECK-NEXT: sthrl %r2, e
; CHECK-NEXT: st %r0, 4(%r1)
; CHECK-NEXT: lghi %r2, 0
; CHECK-NEXT: strl %r0, d
; CHECK-NEXT: br %r14
%e = load i64, ptr @e, align 8
%esh = lshr i64 %e, 32
%ehi = trunc i64 %esh to i32
%elo = trunc i64 %e to i32
%t1 = load ptr, ptr @f, align 8
store i32 %ehi, ptr %t1, align 4
%f4 = getelementptr inbounds i8, ptr %t1, i64 4
store i32 %elo, ptr %f4, align 4
store i16 0, ptr @e, align 8
store i32 %elo, ptr @d, align 4
ret i32 0
}