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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; This test check if redundant truncate for eq/ne cmp is skipped during code gen.
;RUN: llc -mtriple=thumbv7-eabi < %s | FileCheck %s
define void @test_zero(i16 signext %x) optsize {
; CHECK-LABEL: test_zero:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: cbz r0, .LBB0_2
; CHECK-NEXT: @ %bb.1: @ %if.then
; CHECK-NEXT: b foo1
; CHECK-NEXT: .LBB0_2: @ %if.else
; CHECK-NEXT: b foo2
entry:
%tobool = icmp eq i16 %x, 0
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
tail call void bitcast (void (...)* @foo1 to void ()*)()
br label %if.end
if.else: ; preds = %entry
tail call void bitcast (void (...)* @foo2 to void ()*)()
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
define void @test_i8_nonzero(i18 signext %x) optsize {
; CHECK-LABEL: test_i8_nonzero:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: cmp r0, #150
; CHECK-NEXT: it eq
; CHECK-NEXT: beq foo2
; CHECK-NEXT: .LBB1_1: @ %if.then
; CHECK-NEXT: b foo1
entry:
%tobool = icmp eq i18 %x, 150
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
tail call void bitcast (void (...)* @foo1 to void ()*)()
br label %if.end
if.else: ; preds = %entry
tail call void bitcast (void (...)* @foo2 to void ()*)()
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
define void @test_i8_i16(i8 signext %x) optsize {
; CHECK-LABEL: test_i8_i16:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: cmp.w r0, #300
; CHECK-NEXT: it eq
; CHECK-NEXT: beq foo2
; CHECK-NEXT: .LBB2_1: @ %if.then
; CHECK-NEXT: b foo1
entry:
%x16 = sext i8 %x to i16
%tobool = icmp eq i16 %x16, 300
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
tail call void bitcast (void (...)* @foo1 to void ()*)()
br label %if.end
if.else: ; preds = %entry
tail call void bitcast (void (...)* @foo2 to void ()*)()
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
define void @test_i16_i8(i16 signext %x) optsize {
; CHECK-LABEL: test_i16_i8:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: uxtb r0, r0
; CHECK-NEXT: cmp r0, #128
; CHECK-NEXT: it eq
; CHECK-NEXT: beq foo2
; CHECK-NEXT: .LBB3_1: @ %if.then
; CHECK-NEXT: b foo1
entry:
%x8 = trunc i16 %x to i8
%tobool = icmp eq i8 %x8, 128
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
tail call void bitcast (void (...)* @foo1 to void ()*)()
br label %if.end
if.else: ; preds = %entry
tail call void bitcast (void (...)* @foo2 to void ()*)()
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
define void @test_zext_zero(i16 zeroext %x) optsize {
; CHECK-LABEL: test_zext_zero:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: cbz r0, .LBB4_2
; CHECK-NEXT: @ %bb.1: @ %if.then
; CHECK-NEXT: b foo1
; CHECK-NEXT: .LBB4_2: @ %if.else
; CHECK-NEXT: b foo2
entry:
%tobool = icmp eq i16 %x, 0
br i1 %tobool, label %if.else, label %if.then
if.then: ; preds = %entry
tail call void bitcast (void (...)* @foo1 to void ()*)()
br label %if.end
if.else: ; preds = %entry
tail call void bitcast (void (...)* @foo2 to void ()*)()
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
declare void @foo1(...)
declare void @foo2(...)
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