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unsigned long long g; unsigned long foo (unsigned long a) { return (a >= g) ? 1 : 0; } It changes the ppc code from: _foo: .LBB_foo_0: ; entry mflr r11 stw r11, 8(r1) bl "L00000$pb" "L00000$pb": mflr r2 addis r2, r2, ha16(L_g$non_lazy_ptr-"L00000$pb") lwz r2, lo16(L_g$non_lazy_ptr-"L00000$pb")(r2) lwz r4, 0(r2) lwz r2, 4(r2) cmplw cr0, r3, r2 li r2, 1 li r3, 0 bge .LBB_foo_2 ; entry .LBB_foo_1: ; entry or r2, r3, r3 .LBB_foo_2: ; entry cmplwi cr0, r4, 1 li r3, 1 li r5, 0 blt .LBB_foo_4 ; entry .LBB_foo_3: ; entry or r3, r5, r5 .LBB_foo_4: ; entry cmpwi cr0, r4, 0 beq .LBB_foo_6 ; entry .LBB_foo_5: ; entry or r2, r3, r3 .LBB_foo_6: ; entry rlwinm r3, r2, 0, 31, 31 lwz r11, 8(r1) mtlr r11 blr to: _foo: .LBB_foo_0: ; entry mflr r11 stw r11, 8(r1) bl "L00000$pb" "L00000$pb": mflr r2 addis r2, r2, ha16(L_g$non_lazy_ptr-"L00000$pb") lwz r2, lo16(L_g$non_lazy_ptr-"L00000$pb")(r2) lwz r4, 0(r2) lwz r2, 4(r2) cmplw cr0, r3, r2 li r2, 1 li r3, 0 bge .LBB_foo_2 ; entry .LBB_foo_1: ; entry or r2, r3, r3 .LBB_foo_2: ; entry cntlzw r3, r4 srwi r3, r3, 5 cmpwi cr0, r4, 0 beq .LBB_foo_4 ; entry .LBB_foo_3: ; entry or r2, r3, r3 .LBB_foo_4: ; entry rlwinm r3, r2, 0, 31, 31 lwz r11, 8(r1) mtlr r11 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21241 91177308-0d34-0410-b5e6-96231b3b80d8 |
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