cmph-gtu.ll
1.15 KB
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; RUN: llc -march=hexagon < %s | FileCheck %s
; Check that we generate 'cmph.gtu' instruction.
; CHECK-LABEL: @cmphgtu
; CHECK: cmph.gtu
@glob = common global i8 0, align 1
define i32 @cmphgtu(i32 %a0, i32 %a1) #0 {
b2:
%v3 = xor i32 %a1, %a0
%v4 = and i32 %v3, 65535
%v5 = icmp ugt i32 %v4, 40
br i1 %v5, label %b6, label %b8
b6: ; preds = %b2
%v7 = trunc i32 %a0 to i8
store i8 %v7, i8* @glob, align 1
br label %b8
b8: ; preds = %b6, %b2
%v9 = phi i32 [ 1, %b6 ], [ 0, %b2 ]
ret i32 %v9
}
; With zxtb, we must not generate a cmph.gtu instruction.
; CHECK-LABEL: @nocmphgtu
; CHECK-NOT: cmph.gtu
define i32 @nocmphgtu(i32 %a0, i32 %a1) #0 {
b2:
%v3 = xor i32 %a1, %a0
%v4 = and i32 %v3, 255
%v5 = icmp ugt i32 %v4, 40
br i1 %v5, label %b6, label %b8
b6: ; preds = %b2
%v7 = trunc i32 %a0 to i8
store i8 %v7, i8* @glob, align 1
br label %b8
b8: ; preds = %b6, %b2
%v9 = phi i32 [ 1, %b6 ], [ 0, %b2 ]
ret i32 %v9
}
attributes #0 = { nounwind }