| ; RUN: llc -O2 -march=bpfel -mcpu=v2 -mattr=+alu32 < %s | FileCheck %s |
| ; |
| ; For the below test case, both 'ret' and 'b' at 'ret == b' |
| ; need SLL/SLR. For 'ret', 'ret = a' may receive the value |
| ; from argument with high 32-bit invalid data. |
| ; |
| ; extern int helper(int); |
| ; int test(int a, int b, int c, int d) { |
| ; int ret; |
| ; if (a < b) |
| ; ret = (c < d) ? a : 0; |
| ; else |
| ; ret = (c < a) ? 1 : 2; |
| ; return helper(ret == b); |
| ; } |
| |
| define dso_local i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) local_unnamed_addr { |
| entry: |
| %cmp = icmp slt i32 %a, %b |
| %cmp1 = icmp slt i32 %c, %d |
| %cond = select i1 %cmp1, i32 %a, i32 0 |
| %cmp2 = icmp slt i32 %c, %a |
| %cond3 = select i1 %cmp2, i32 1, i32 2 |
| %ret.0 = select i1 %cmp, i32 %cond, i32 %cond3 |
| %cmp4 = icmp eq i32 %ret.0, %b |
| %conv = zext i1 %cmp4 to i32 |
| %call = tail call i32 @helper(i32 %conv) |
| ret i32 %call |
| } |
| ; CHECK: r{{[0-9]+}} = w{{[0-9]+}} |
| ; CHECK: r{{[0-9]+}} = w{{[0-9]+}} |
| ; CHECK: if r{{[0-9]+}} == r{{[0-9]+}} goto |
| |
| declare dso_local i32 @helper(i32) local_unnamed_addr |