85 lines
2.7 KiB
LLVM
85 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s -mtriple=x86_64 | FileCheck %s
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define zeroext i32 @trunc_nuw_nsw_urem(i64 %x) nounwind {
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; CHECK-LABEL: trunc_nuw_nsw_urem:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movq %rdi, %rax
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; CHECK-NEXT: movl $3518437209, %ecx # imm = 0xD1B71759
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; CHECK-NEXT: imulq %rdi, %rcx
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; CHECK-NEXT: shrq $45, %rcx
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; CHECK-NEXT: imull $10000, %ecx, %ecx # imm = 0x2710
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; CHECK-NEXT: subl %ecx, %eax
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; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
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; CHECK-NEXT: retq
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entry:
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%trunc = trunc nuw nsw i64 %x to i32
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%rem = urem i32 %trunc, 10000
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ret i32 %rem
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}
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define i64 @zext_nneg_udiv_trunc_nuw(i64 %x) nounwind {
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; CHECK-LABEL: zext_nneg_udiv_trunc_nuw:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: imull $52429, %edi, %eax # imm = 0xCCCD
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; CHECK-NEXT: shrl $23, %eax
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; CHECK-NEXT: retq
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entry:
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%trunc = trunc nuw i64 %x to i16
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%div = udiv i16 %trunc, 160
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%ext = zext nneg i16 %div to i64
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ret i64 %ext
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}
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define i64 @sext_udiv_trunc_nuw(i64 %x) nounwind {
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; CHECK-LABEL: sext_udiv_trunc_nuw:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: imull $52429, %edi, %eax # imm = 0xCCCD
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; CHECK-NEXT: shrl $23, %eax
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; CHECK-NEXT: retq
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entry:
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%trunc = trunc nuw i64 %x to i16
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%div = udiv i16 %trunc, 160
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%ext = sext i16 %div to i64
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ret i64 %ext
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}
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define ptr @gep_nusw_zext_nneg_add_trunc_nuw_nsw(ptr %p, i64 %x) nounwind {
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; CHECK-LABEL: gep_nusw_zext_nneg_add_trunc_nuw_nsw:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: leaq 20(%rdi,%rsi,4), %rax
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; CHECK-NEXT: retq
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entry:
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%trunc = trunc nuw nsw i64 %x to i32
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%add = add nuw nsw i32 %trunc, 5
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%offset = zext nneg i32 %add to i64
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%gep = getelementptr nusw float, ptr %p, i64 %offset
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ret ptr %gep
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}
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; Make sure nsw flag is dropped after we simplify the operand of TRUNCATE.
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define i32 @simplify_demanded_bits_drop_flag(i1 zeroext %x, i1 zeroext %y) nounwind {
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; CHECK-LABEL: simplify_demanded_bits_drop_flag:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-NEXT: shll $2, %esi
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; CHECK-NEXT: movl %edi, %eax
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; CHECK-NEXT: negq %rax
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; CHECK-NEXT: xorq %rsi, %rax
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; CHECK-NEXT: imulq $-1634202141, %rax, %rax # imm = 0x9E980DE3
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; CHECK-NEXT: movq %rax, %rcx
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; CHECK-NEXT: shrq $63, %rcx
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; CHECK-NEXT: sarq $44, %rax
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; CHECK-NEXT: addl %ecx, %eax
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; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
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; CHECK-NEXT: retq
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entry:
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%sel = select i1 %y, i64 4, i64 0
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%conv0 = sext i1 %x to i64
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%xor = xor i64 %sel, %conv0
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%conv1 = trunc nsw i64 %xor to i32
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%div = sdiv i32 %conv1, -10765
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ret i32 %div
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}
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