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; RUN: llc -mtriple=thumbv7em %s -arm-disable-cgp=false -o - | FileCheck %s
; RUN: llc -mtriple=thumbv7-linux-android %s -arm-disable-cgp=false -o - | FileCheck %s
; CHECK-LABEL: truncate_source_phi_switch
; CHECK: ldrb
; CHECK: uxtb
define void @truncate_source_phi_switch(i8* %memblock, i8* %store, i16 %arg) {
entry:
%pre = load i8, i8* %memblock, align 1
%conv = trunc i16 %arg to i8
br label %header
header:
%phi.0 = phi i8 [ %pre, %entry ], [ %count, %latch ]
%phi.1 = phi i8 [ %conv, %entry ], [ %phi.3, %latch ]
%phi.2 = phi i8 [ 0, %entry], [ %count, %latch ]
switch i8 %phi.0, label %default [
i8 43, label %for.inc.i
i8 45, label %for.inc.i.i
]
for.inc.i:
%xor = xor i8 %phi.1, 1
br label %latch
for.inc.i.i:
%and = and i8 %phi.1, 3
br label %latch
default:
%sub = sub i8 %phi.0, 1
%cmp2 = icmp ugt i8 %sub, 4
br i1 %cmp2, label %latch, label %exit
latch:
%phi.3 = phi i8 [ %xor, %for.inc.i ], [ %and, %for.inc.i.i ], [ %phi.2, %default ]
%count = add nuw i8 %phi.2, 1
store i8 %count, i8* %store, align 1
br label %header
exit:
ret void
}
; CHECK-LABEL: icmp_switch_source:
; CHECK-NOT: uxt
define i16 @icmp_switch_source(i16 zeroext %arg) {
entry:
%conv = add nuw i16 %arg, 15
%mul = mul nuw nsw i16 %conv, 3
switch i16 %arg, label %default [
i16 0, label %sw.bb
i16 1, label %sw.bb.i
]
sw.bb:
%cmp0 = icmp ult i16 %mul, 127
%select = select i1 %cmp0, i16 %mul, i16 127
br label %exit
sw.bb.i:
%cmp1 = icmp ugt i16 %mul, 34
%select.i = select i1 %cmp1, i16 %mul, i16 34
br label %exit
default:
br label %exit
exit:
%res = phi i16 [ %select, %sw.bb ], [ %select.i, %sw.bb.i ], [ %mul, %default ]
ret i16 %res
}
; CHECK-LABEL: icmp_switch_narrow_source:
; CHECK-NOT: uxt
define i16 @icmp_switch_narrow_source(i8 zeroext %arg) {
entry:
%conv = zext i8 %arg to i16
%add = add nuw i16 %conv, 15
%mul = mul nuw nsw i16 %add, 3
switch i8 %arg, label %default [
i8 0, label %sw.bb
i8 1, label %sw.bb.i
]
sw.bb:
%cmp0 = icmp ult i16 %mul, 127
%select = select i1 %cmp0, i16 %mul, i16 127
br label %exit
sw.bb.i:
%cmp1 = icmp ugt i16 %mul, 34
%select.i = select i1 %cmp1, i16 %mul, i16 34
br label %exit
default:
br label %exit
exit:
%res = phi i16 [ %select, %sw.bb ], [ %select.i, %sw.bb.i ], [ %mul, %default ]
ret i16 %res
}
; CHECK-LABEL: icmp_switch_trunc:
; CHECK-NOT: uxt
define i16 @icmp_switch_trunc(i16 zeroext %arg) {
entry:
%conv = add nuw i16 %arg, 15
%mul = mul nuw nsw i16 %conv, 3
%trunc = trunc i16 %arg to i3
switch i3 %trunc, label %default [
i3 0, label %sw.bb
i3 1, label %sw.bb.i
]
sw.bb:
%cmp0 = icmp ult i16 %mul, 127
%select = select i1 %cmp0, i16 %mul, i16 127
br label %exit
sw.bb.i:
%cmp1 = icmp ugt i16 %mul, 34
%select.i = select i1 %cmp1, i16 %mul, i16 34
br label %exit
default:
br label %exit
exit:
%res = phi i16 [ %select, %sw.bb ], [ %select.i, %sw.bb.i ], [ %mul, %default ]
ret i16 %res
}
%class.ae = type { i8 }
%class.x = type { i8 }
%class.v = type { %class.q }
%class.q = type { i16 }
declare %class.x* @_ZNK2ae2afEv(%class.ae*) local_unnamed_addr
declare %class.v* @_ZN1x2acEv(%class.x*) local_unnamed_addr
; CHECK-LABEL: trunc_i16_i9_switch
; CHECK-NOT: uxt
define i32 @trunc_i16_i9_switch(%class.ae* %this) {
entry:
%call = tail call %class.x* @_ZNK2ae2afEv(%class.ae* %this)
%call2 = tail call %class.v* @_ZN1x2acEv(%class.x* %call)
%0 = getelementptr inbounds %class.v, %class.v* %call2, i32 0, i32 0, i32 0
%1 = load i16, i16* %0, align 2
%2 = trunc i16 %1 to i9
%trunc = and i9 %2, -64
switch i9 %trunc, label %cleanup.fold.split [
i9 0, label %cleanup
i9 -256, label %if.then7
]
if.then7:
%3 = and i16 %1, 7
%tobool = icmp eq i16 %3, 0
%cond = select i1 %tobool, i32 2, i32 1
br label %cleanup
cleanup.fold.split:
br label %cleanup
cleanup:
%retval.0 = phi i32 [ %cond, %if.then7 ], [ 0, %entry ], [ 2, %cleanup.fold.split ]
ret i32 %retval.0
}
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