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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -o - %s -mtriple=aarch64 | FileCheck %s --check-prefix=CHECK-O2
; RUN: llc -o - %s -mtriple=aarch64 -O3 | FileCheck %s --check-prefix=CHECK-O3
%struct.S = type { i32, i16 }
define i32 @needless_promotion(ptr nocapture noundef readonly %S, i64 noundef %red_cost) {
; CHECK-O2-LABEL: needless_promotion:
; CHECK-O2: // %bb.0: // %entry
; CHECK-O2-NEXT: ldrsh w8, [x0, #4]
; CHECK-O2-NEXT: tbnz w8, #31, .LBB0_3
; CHECK-O2-NEXT: // %bb.1: // %lor.rhs
; CHECK-O2-NEXT: cbz x1, .LBB0_5
; CHECK-O2-NEXT: // %bb.2:
; CHECK-O2-NEXT: mov w9, #2
; CHECK-O2-NEXT: b .LBB0_4
; CHECK-O2-NEXT: .LBB0_3:
; CHECK-O2-NEXT: mov w9, #1
; CHECK-O2-NEXT: .LBB0_4: // %lor.end.sink.split
; CHECK-O2-NEXT: cmp w8, w9
; CHECK-O2-NEXT: cset w0, eq
; CHECK-O2-NEXT: ret
; CHECK-O2-NEXT: .LBB0_5:
; CHECK-O2-NEXT: mov w0, wzr
; CHECK-O2-NEXT: ret
;
; CHECK-O3-LABEL: needless_promotion:
; CHECK-O3: // %bb.0: // %entry
; CHECK-O3-NEXT: ldrsh w8, [x0, #4]
; CHECK-O3-NEXT: tbnz w8, #31, .LBB0_3
; CHECK-O3-NEXT: // %bb.1: // %lor.rhs
; CHECK-O3-NEXT: cbz x1, .LBB0_4
; CHECK-O3-NEXT: // %bb.2:
; CHECK-O3-NEXT: mov w9, #2
; CHECK-O3-NEXT: cmp w8, w9
; CHECK-O3-NEXT: cset w0, eq
; CHECK-O3-NEXT: ret
; CHECK-O3-NEXT: .LBB0_3:
; CHECK-O3-NEXT: mov w9, #1
; CHECK-O3-NEXT: cmp w8, w9
; CHECK-O3-NEXT: cset w0, eq
; CHECK-O3-NEXT: ret
; CHECK-O3-NEXT: .LBB0_4:
; CHECK-O3-NEXT: mov w0, wzr
; CHECK-O3-NEXT: ret
entry:
%ident = getelementptr inbounds %struct.S, ptr %S, i64 0, i32 1
%0 = load i16, ptr %ident, align 8
%cmp = icmp slt i16 %0, 0
br i1 %cmp, label %lor.end.sink.split, label %lor.rhs
lor.rhs: ; preds = %entry
%cmp3.not = icmp eq i64 %red_cost, 0
br i1 %cmp3.not, label %lor.end, label %lor.end.sink.split
lor.end.sink.split: ; preds = %lor.rhs, %entry
%.sink12 = phi i16 [ 1, %entry ], [ 2, %lor.rhs ]
%cmp1 = icmp eq i16 %0, %.sink12
%phi.cast = zext i1 %cmp1 to i32
br label %lor.end
lor.end: ; preds = %lor.end.sink.split, %lor.rhs
%.shrunk = phi i32 [ 0, %lor.rhs ], [ %phi.cast, %lor.end.sink.split ]
ret i32 %.shrunk
}
define i8 @loopcmp(ptr nocapture noundef readonly %x, i8 noundef %y) {
; CHECK-O2-LABEL: loopcmp:
; CHECK-O2: // %bb.0: // %entry
; CHECK-O2-NEXT: and w9, w1, #0xff
; CHECK-O2-NEXT: .LBB1_1: // %while.cond
; CHECK-O2-NEXT: // =>This Inner Loop Header: Depth=1
; CHECK-O2-NEXT: ldrb w8, [x0], #1
; CHECK-O2-NEXT: cmp w8, w9
; CHECK-O2-NEXT: b.lo .LBB1_1
; CHECK-O2-NEXT: // %bb.2: // %while.end
; CHECK-O2-NEXT: mov w0, w8
; CHECK-O2-NEXT: ret
;
; CHECK-O3-LABEL: loopcmp:
; CHECK-O3: // %bb.0: // %entry
; CHECK-O3-NEXT: and w9, w1, #0xff
; CHECK-O3-NEXT: .LBB1_1: // %while.cond
; CHECK-O3-NEXT: // =>This Inner Loop Header: Depth=1
; CHECK-O3-NEXT: ldrb w8, [x0], #1
; CHECK-O3-NEXT: cmp w8, w9
; CHECK-O3-NEXT: b.lo .LBB1_1
; CHECK-O3-NEXT: // %bb.2: // %while.end
; CHECK-O3-NEXT: mov w0, w8
; CHECK-O3-NEXT: ret
entry:
br label %while.cond
while.cond: ; preds = %while.cond, %entry
%a.0.in = phi ptr [ %x, %entry ], [ %x.addr.0, %while.cond ]
%a.0 = load i8, ptr %a.0.in, align 1
%cmp = icmp ult i8 %a.0, %y
%x.addr.0 = getelementptr inbounds i8, ptr %a.0.in, i64 1
br i1 %cmp, label %while.cond, label %while.end
while.end: ; preds = %while.cond
ret i8 %a.0
}
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