| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=-cmov | FileCheck %s --check-prefixes=ALL,I386,I386-NOCMOV |
| ; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=+cmov | FileCheck %s --check-prefixes=ALL,I386,I386-CMOV |
| ; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=-cmov | FileCheck %s --check-prefixes=ALL,I686,I686-NOCMOV |
| ; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+cmov | FileCheck %s --check-prefixes=ALL,I686,I686-CMOV |
| ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=-cmov | FileCheck %s --check-prefixes=ALL,X86_64,X86_64-NOCMOV |
| ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+cmov | FileCheck %s --check-prefixes=ALL,X86_64,X86_64-CMOV |
| |
| ; Values don't come from regs. All good. |
| |
| define i8 @t0(i32 %a1_wide_orig, i32 %a2_wide_orig, i32 %inc) nounwind { |
| ; I386-NOCMOV-LABEL: t0: |
| ; I386-NOCMOV: # %bb.0: |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-NOCMOV-NEXT: addl %ecx, %eax |
| ; I386-NOCMOV-NEXT: addl {{[0-9]+}}(%esp), %ecx |
| ; I386-NOCMOV-NEXT: cmpb %cl, %al |
| ; I386-NOCMOV-NEXT: jge .LBB0_2 |
| ; I386-NOCMOV-NEXT: # %bb.1: |
| ; I386-NOCMOV-NEXT: movl %ecx, %eax |
| ; I386-NOCMOV-NEXT: .LBB0_2: |
| ; I386-NOCMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-NOCMOV-NEXT: retl |
| ; |
| ; I386-CMOV-LABEL: t0: |
| ; I386-CMOV: # %bb.0: |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-CMOV-NEXT: addl %eax, %ecx |
| ; I386-CMOV-NEXT: addl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: cmpb %al, %cl |
| ; I386-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I386-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-CMOV-NEXT: retl |
| ; |
| ; I686-NOCMOV-LABEL: t0: |
| ; I686-NOCMOV: # %bb.0: |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-NOCMOV-NEXT: addl %ecx, %eax |
| ; I686-NOCMOV-NEXT: addl {{[0-9]+}}(%esp), %ecx |
| ; I686-NOCMOV-NEXT: cmpb %cl, %al |
| ; I686-NOCMOV-NEXT: jge .LBB0_2 |
| ; I686-NOCMOV-NEXT: # %bb.1: |
| ; I686-NOCMOV-NEXT: movl %ecx, %eax |
| ; I686-NOCMOV-NEXT: .LBB0_2: |
| ; I686-NOCMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-NOCMOV-NEXT: retl |
| ; |
| ; I686-CMOV-LABEL: t0: |
| ; I686-CMOV: # %bb.0: |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-CMOV-NEXT: addl %eax, %ecx |
| ; I686-CMOV-NEXT: addl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: cmpb %al, %cl |
| ; I686-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I686-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-CMOV-NEXT: retl |
| ; |
| ; X86_64-LABEL: t0: |
| ; X86_64: # %bb.0: |
| ; X86_64-NEXT: movl %esi, %eax |
| ; X86_64-NEXT: addl %edx, %edi |
| ; X86_64-NEXT: addl %edx, %eax |
| ; X86_64-NEXT: cmpb %al, %dil |
| ; X86_64-NEXT: cmovgel %edi, %eax |
| ; X86_64-NEXT: # kill: def $al killed $al killed $eax |
| ; X86_64-NEXT: retq |
| %a1_wide = add i32 %a1_wide_orig, %inc |
| %a2_wide = add i32 %a2_wide_orig, %inc |
| %a1 = trunc i32 %a1_wide to i8 |
| %a2 = trunc i32 %a2_wide to i8 |
| %t1 = icmp sgt i8 %a1, %a2 |
| %t2 = select i1 %t1, i8 %a1, i8 %a2 |
| ret i8 %t2 |
| } |
| |
| ; Values don't come from regs, but there is only one truncation. |
| |
| define i8 @neg_only_one_truncation(i32 %a1_wide_orig, i8 %a2_orig, i32 %inc) nounwind { |
| ; I386-NOCMOV-LABEL: neg_only_one_truncation: |
| ; I386-NOCMOV: # %bb.0: |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-NOCMOV-NEXT: addl %ecx, %eax |
| ; I386-NOCMOV-NEXT: addb {{[0-9]+}}(%esp), %cl |
| ; I386-NOCMOV-NEXT: cmpb %cl, %al |
| ; I386-NOCMOV-NEXT: jge .LBB1_2 |
| ; I386-NOCMOV-NEXT: # %bb.1: |
| ; I386-NOCMOV-NEXT: movl %ecx, %eax |
| ; I386-NOCMOV-NEXT: .LBB1_2: |
| ; I386-NOCMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-NOCMOV-NEXT: retl |
| ; |
| ; I386-CMOV-LABEL: neg_only_one_truncation: |
| ; I386-CMOV: # %bb.0: |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-CMOV-NEXT: addl %eax, %ecx |
| ; I386-CMOV-NEXT: addb {{[0-9]+}}(%esp), %al |
| ; I386-CMOV-NEXT: cmpb %al, %cl |
| ; I386-CMOV-NEXT: movzbl %al, %eax |
| ; I386-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I386-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-CMOV-NEXT: retl |
| ; |
| ; I686-NOCMOV-LABEL: neg_only_one_truncation: |
| ; I686-NOCMOV: # %bb.0: |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-NOCMOV-NEXT: addl %ecx, %eax |
| ; I686-NOCMOV-NEXT: addb {{[0-9]+}}(%esp), %cl |
| ; I686-NOCMOV-NEXT: cmpb %cl, %al |
| ; I686-NOCMOV-NEXT: jge .LBB1_2 |
| ; I686-NOCMOV-NEXT: # %bb.1: |
| ; I686-NOCMOV-NEXT: movl %ecx, %eax |
| ; I686-NOCMOV-NEXT: .LBB1_2: |
| ; I686-NOCMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-NOCMOV-NEXT: retl |
| ; |
| ; I686-CMOV-LABEL: neg_only_one_truncation: |
| ; I686-CMOV: # %bb.0: |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-CMOV-NEXT: addl %eax, %ecx |
| ; I686-CMOV-NEXT: addb {{[0-9]+}}(%esp), %al |
| ; I686-CMOV-NEXT: cmpb %al, %cl |
| ; I686-CMOV-NEXT: movzbl %al, %eax |
| ; I686-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I686-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-CMOV-NEXT: retl |
| ; |
| ; X86_64-LABEL: neg_only_one_truncation: |
| ; X86_64: # %bb.0: |
| ; X86_64-NEXT: addl %edx, %edi |
| ; X86_64-NEXT: addb %sil, %dl |
| ; X86_64-NEXT: cmpb %dl, %dil |
| ; X86_64-NEXT: movzbl %dl, %eax |
| ; X86_64-NEXT: cmovgel %edi, %eax |
| ; X86_64-NEXT: # kill: def $al killed $al killed $eax |
| ; X86_64-NEXT: retq |
| %a1_wide = add i32 %a1_wide_orig, %inc |
| %inc_short = trunc i32 %inc to i8 |
| %a2 = add i8 %a2_orig, %inc_short |
| %a1 = trunc i32 %a1_wide to i8 |
| %t1 = icmp sgt i8 %a1, %a2 |
| %t2 = select i1 %t1, i8 %a1, i8 %a2 |
| ret i8 %t2 |
| } |
| |
| ; Values don't come from regs, but truncation from different types. |
| |
| define i8 @neg_type_mismatch(i32 %a1_wide_orig, i16 %a2_wide_orig, i32 %inc) nounwind { |
| ; I386-NOCMOV-LABEL: neg_type_mismatch: |
| ; I386-NOCMOV: # %bb.0: |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-NOCMOV-NEXT: addl %ecx, %eax |
| ; I386-NOCMOV-NEXT: addw {{[0-9]+}}(%esp), %cx |
| ; I386-NOCMOV-NEXT: cmpb %cl, %al |
| ; I386-NOCMOV-NEXT: jge .LBB2_2 |
| ; I386-NOCMOV-NEXT: # %bb.1: |
| ; I386-NOCMOV-NEXT: movl %ecx, %eax |
| ; I386-NOCMOV-NEXT: .LBB2_2: |
| ; I386-NOCMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-NOCMOV-NEXT: retl |
| ; |
| ; I386-CMOV-LABEL: neg_type_mismatch: |
| ; I386-CMOV: # %bb.0: |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-CMOV-NEXT: addl %eax, %ecx |
| ; I386-CMOV-NEXT: addw {{[0-9]+}}(%esp), %ax |
| ; I386-CMOV-NEXT: cmpb %al, %cl |
| ; I386-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I386-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-CMOV-NEXT: retl |
| ; |
| ; I686-NOCMOV-LABEL: neg_type_mismatch: |
| ; I686-NOCMOV: # %bb.0: |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-NOCMOV-NEXT: addl %ecx, %eax |
| ; I686-NOCMOV-NEXT: addw {{[0-9]+}}(%esp), %cx |
| ; I686-NOCMOV-NEXT: cmpb %cl, %al |
| ; I686-NOCMOV-NEXT: jge .LBB2_2 |
| ; I686-NOCMOV-NEXT: # %bb.1: |
| ; I686-NOCMOV-NEXT: movl %ecx, %eax |
| ; I686-NOCMOV-NEXT: .LBB2_2: |
| ; I686-NOCMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-NOCMOV-NEXT: retl |
| ; |
| ; I686-CMOV-LABEL: neg_type_mismatch: |
| ; I686-CMOV: # %bb.0: |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-CMOV-NEXT: addl %eax, %ecx |
| ; I686-CMOV-NEXT: addw {{[0-9]+}}(%esp), %ax |
| ; I686-CMOV-NEXT: cmpb %al, %cl |
| ; I686-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I686-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-CMOV-NEXT: retl |
| ; |
| ; X86_64-LABEL: neg_type_mismatch: |
| ; X86_64: # %bb.0: |
| ; X86_64-NEXT: movl %esi, %eax |
| ; X86_64-NEXT: addl %edx, %edi |
| ; X86_64-NEXT: addl %edx, %eax |
| ; X86_64-NEXT: cmpb %al, %dil |
| ; X86_64-NEXT: cmovgel %edi, %eax |
| ; X86_64-NEXT: # kill: def $al killed $al killed $eax |
| ; X86_64-NEXT: retq |
| %a1_wide = add i32 %a1_wide_orig, %inc |
| %inc_short = trunc i32 %inc to i16 |
| %a2_wide = add i16 %a2_wide_orig, %inc_short |
| %a1 = trunc i32 %a1_wide to i8 |
| %a2 = trunc i16 %a2_wide to i8 |
| %t1 = icmp sgt i8 %a1, %a2 |
| %t2 = select i1 %t1, i8 %a1, i8 %a2 |
| ret i8 %t2 |
| } |
| |
| ; One value come from regs |
| |
| define i8 @negative_CopyFromReg(i32 %a1_wide, i32 %a2_wide_orig, i32 %inc) nounwind { |
| ; I386-NOCMOV-LABEL: negative_CopyFromReg: |
| ; I386-NOCMOV: # %bb.0: |
| ; I386-NOCMOV-NEXT: movb {{[0-9]+}}(%esp), %al |
| ; I386-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-NOCMOV-NEXT: addl {{[0-9]+}}(%esp), %ecx |
| ; I386-NOCMOV-NEXT: cmpb %cl, %al |
| ; I386-NOCMOV-NEXT: jge .LBB3_2 |
| ; I386-NOCMOV-NEXT: # %bb.1: |
| ; I386-NOCMOV-NEXT: movl %ecx, %eax |
| ; I386-NOCMOV-NEXT: .LBB3_2: |
| ; I386-NOCMOV-NEXT: retl |
| ; |
| ; I386-CMOV-LABEL: negative_CopyFromReg: |
| ; I386-CMOV: # %bb.0: |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: addl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: cmpb %al, %cl |
| ; I386-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I386-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-CMOV-NEXT: retl |
| ; |
| ; I686-NOCMOV-LABEL: negative_CopyFromReg: |
| ; I686-NOCMOV: # %bb.0: |
| ; I686-NOCMOV-NEXT: movb {{[0-9]+}}(%esp), %al |
| ; I686-NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-NOCMOV-NEXT: addl {{[0-9]+}}(%esp), %ecx |
| ; I686-NOCMOV-NEXT: cmpb %cl, %al |
| ; I686-NOCMOV-NEXT: jge .LBB3_2 |
| ; I686-NOCMOV-NEXT: # %bb.1: |
| ; I686-NOCMOV-NEXT: movl %ecx, %eax |
| ; I686-NOCMOV-NEXT: .LBB3_2: |
| ; I686-NOCMOV-NEXT: retl |
| ; |
| ; I686-CMOV-LABEL: negative_CopyFromReg: |
| ; I686-CMOV: # %bb.0: |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: addl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: cmpb %al, %cl |
| ; I686-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I686-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-CMOV-NEXT: retl |
| ; |
| ; X86_64-LABEL: negative_CopyFromReg: |
| ; X86_64: # %bb.0: |
| ; X86_64-NEXT: movl %esi, %eax |
| ; X86_64-NEXT: addl %edx, %eax |
| ; X86_64-NEXT: cmpb %al, %dil |
| ; X86_64-NEXT: cmovgel %edi, %eax |
| ; X86_64-NEXT: # kill: def $al killed $al killed $eax |
| ; X86_64-NEXT: retq |
| %a2_wide = add i32 %a2_wide_orig, %inc |
| %a1 = trunc i32 %a1_wide to i8 |
| %a2 = trunc i32 %a2_wide to i8 |
| %t1 = icmp sgt i8 %a1, %a2 |
| %t2 = select i1 %t1, i8 %a1, i8 %a2 |
| ret i8 %t2 |
| } |
| |
| ; Both values come from regs |
| |
| define i8 @negative_CopyFromRegs(i32 %a1_wide, i32 %a2_wide) nounwind { |
| ; I386-NOCMOV-LABEL: negative_CopyFromRegs: |
| ; I386-NOCMOV: # %bb.0: |
| ; I386-NOCMOV-NEXT: movb {{[0-9]+}}(%esp), %cl |
| ; I386-NOCMOV-NEXT: movb {{[0-9]+}}(%esp), %al |
| ; I386-NOCMOV-NEXT: cmpb %cl, %al |
| ; I386-NOCMOV-NEXT: jge .LBB4_2 |
| ; I386-NOCMOV-NEXT: # %bb.1: |
| ; I386-NOCMOV-NEXT: movl %ecx, %eax |
| ; I386-NOCMOV-NEXT: .LBB4_2: |
| ; I386-NOCMOV-NEXT: retl |
| ; |
| ; I386-CMOV-LABEL: negative_CopyFromRegs: |
| ; I386-CMOV: # %bb.0: |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I386-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I386-CMOV-NEXT: cmpb %al, %cl |
| ; I386-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I386-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I386-CMOV-NEXT: retl |
| ; |
| ; I686-NOCMOV-LABEL: negative_CopyFromRegs: |
| ; I686-NOCMOV: # %bb.0: |
| ; I686-NOCMOV-NEXT: movb {{[0-9]+}}(%esp), %cl |
| ; I686-NOCMOV-NEXT: movb {{[0-9]+}}(%esp), %al |
| ; I686-NOCMOV-NEXT: cmpb %cl, %al |
| ; I686-NOCMOV-NEXT: jge .LBB4_2 |
| ; I686-NOCMOV-NEXT: # %bb.1: |
| ; I686-NOCMOV-NEXT: movl %ecx, %eax |
| ; I686-NOCMOV-NEXT: .LBB4_2: |
| ; I686-NOCMOV-NEXT: retl |
| ; |
| ; I686-CMOV-LABEL: negative_CopyFromRegs: |
| ; I686-CMOV: # %bb.0: |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; I686-CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; I686-CMOV-NEXT: cmpb %al, %cl |
| ; I686-CMOV-NEXT: cmovgel %ecx, %eax |
| ; I686-CMOV-NEXT: # kill: def $al killed $al killed $eax |
| ; I686-CMOV-NEXT: retl |
| ; |
| ; X86_64-LABEL: negative_CopyFromRegs: |
| ; X86_64: # %bb.0: |
| ; X86_64-NEXT: movl %esi, %eax |
| ; X86_64-NEXT: cmpb %al, %dil |
| ; X86_64-NEXT: cmovgel %edi, %eax |
| ; X86_64-NEXT: # kill: def $al killed $al killed $eax |
| ; X86_64-NEXT: retq |
| %a1 = trunc i32 %a1_wide to i8 |
| %a2 = trunc i32 %a2_wide to i8 |
| %t1 = icmp sgt i8 %a1, %a2 |
| %t2 = select i1 %t1, i8 %a1, i8 %a2 |
| ret i8 %t2 |
| } |