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TheRock/compiler/amd-llvm/llvm/test/CodeGen/ARM/2012-06-12-SchedMemLatency.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

40 lines
1.2 KiB
LLVM

; RUN: llc < %s -o /dev/null "-mtriple=thumbv7-apple-ios" -debug-only=post-RA-sched 2> %t
; RUN: FileCheck %s < %t
; REQUIRES: asserts
; Make sure that mayalias store-load dependencies have one cycle
; latency regardless of whether they are barriers or not.
; CHECK: ** List Scheduling
; CHECK: SU(2){{.*}}STR{{.*}}(volatile
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: SU(3): Ord Latency=1
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: SU(3){{.*}}LDR{{.*}}(volatile
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: SU(2): Ord Latency=1
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: Successors:
; CHECK: ** List Scheduling
; CHECK: SU(2){{.*}}STR{{.*}}
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: SU(3): Ord Latency=1
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: SU(3){{.*}}LDR{{.*}}
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: SU(2): Ord Latency=1
; CHECK-NOT: SU({{.*}}): Ord
; CHECK: Successors:
define i32 @f1(ptr nocapture %p1, ptr nocapture %p2) nounwind {
entry:
store volatile i32 65540, ptr %p1, align 4
%0 = load volatile i32, ptr %p2, align 4
ret i32 %0
}
define i32 @f2(ptr nocapture %p1, ptr nocapture %p2) nounwind {
entry:
store i32 65540, ptr %p1, align 4
%0 = load i32, ptr %p2, align 4
ret i32 %0
}