Mercurial > hg > CbC > CbC_llvm
comparison test/CodeGen/AMDGPU/tti-unroll-prefs.ll @ 95:afa8332a0e37 LLVM3.8
LLVM 3.8
| author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 13 Oct 2015 17:48:58 +0900 |
| parents | |
| children | 803732b1fca8 |
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| 84:f3e34b893a5f | 95:afa8332a0e37 |
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| 1 ; RUN: opt -loop-unroll -S -mtriple=amdgcn-- -mcpu=SI %s | FileCheck %s | |
| 2 | |
| 3 ; This IR comes from this OpenCL C code: | |
| 4 ; | |
| 5 ; if (b + 4 > a) { | |
| 6 ; for (int i = 0; i < 4; i++, b++) { | |
| 7 ; if (b + 1 <= a) | |
| 8 ; *(dst + c + b) = 0; | |
| 9 ; else | |
| 10 ; break; | |
| 11 ; } | |
| 12 ; } | |
| 13 ; | |
| 14 ; This test is meant to check that this loop isn't unrolled into more than | |
| 15 ; four iterations. The loop unrolling preferences we currently use cause this | |
| 16 ; loop to not be unrolled at all, but that may change in the future. | |
| 17 | |
| 18 ; CHECK-LABEL: @test | |
| 19 ; CHECK: store i8 0, i8 addrspace(1)* | |
| 20 ; CHECK-NOT: store i8 0, i8 addrspace(1)* | |
| 21 ; CHECK: ret void | |
| 22 define void @test(i8 addrspace(1)* nocapture %dst, i32 %a, i32 %b, i32 %c) { | |
| 23 entry: | |
| 24 %add = add nsw i32 %b, 4 | |
| 25 %cmp = icmp sgt i32 %add, %a | |
| 26 br i1 %cmp, label %for.cond.preheader, label %if.end7 | |
| 27 | |
| 28 for.cond.preheader: ; preds = %entry | |
| 29 %cmp313 = icmp slt i32 %b, %a | |
| 30 br i1 %cmp313, label %if.then4.lr.ph, label %if.end7.loopexit | |
| 31 | |
| 32 if.then4.lr.ph: ; preds = %for.cond.preheader | |
| 33 %0 = sext i32 %c to i64 | |
| 34 br label %if.then4 | |
| 35 | |
| 36 if.then4: ; preds = %if.then4.lr.ph, %if.then4 | |
| 37 %i.015 = phi i32 [ 0, %if.then4.lr.ph ], [ %inc, %if.then4 ] | |
| 38 %b.addr.014 = phi i32 [ %b, %if.then4.lr.ph ], [ %add2, %if.then4 ] | |
| 39 %add2 = add nsw i32 %b.addr.014, 1 | |
| 40 %1 = sext i32 %b.addr.014 to i64 | |
| 41 %add.ptr.sum = add nsw i64 %1, %0 | |
| 42 %add.ptr5 = getelementptr inbounds i8, i8 addrspace(1)* %dst, i64 %add.ptr.sum | |
| 43 store i8 0, i8 addrspace(1)* %add.ptr5, align 1 | |
| 44 %inc = add nsw i32 %i.015, 1 | |
| 45 %cmp1 = icmp slt i32 %inc, 4 | |
| 46 %cmp3 = icmp slt i32 %add2, %a | |
| 47 %or.cond = and i1 %cmp3, %cmp1 | |
| 48 br i1 %or.cond, label %if.then4, label %for.cond.if.end7.loopexit_crit_edge | |
| 49 | |
| 50 for.cond.if.end7.loopexit_crit_edge: ; preds = %if.then4 | |
| 51 br label %if.end7.loopexit | |
| 52 | |
| 53 if.end7.loopexit: ; preds = %for.cond.if.end7.loopexit_crit_edge, %for.cond.preheader | |
| 54 br label %if.end7 | |
| 55 | |
| 56 if.end7: ; preds = %if.end7.loopexit, %entry | |
| 57 ret void | |
| 58 } |