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author | Stephen Hines <srhines@google.com> | 2015-03-23 12:10:34 -0700 |
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committer | Stephen Hines <srhines@google.com> | 2015-03-23 12:10:34 -0700 |
commit | ebe69fe11e48d322045d5949c83283927a0d790b (patch) | |
tree | c92f1907a6b8006628a4b01615f38264d29834ea /test/CodeGen/R600/tti-unroll-prefs.ll | |
parent | b7d2e72b02a4cb8034f32f8247a2558d2434e121 (diff) | |
download | external_llvm-ebe69fe11e48d322045d5949c83283927a0d790b.zip external_llvm-ebe69fe11e48d322045d5949c83283927a0d790b.tar.gz external_llvm-ebe69fe11e48d322045d5949c83283927a0d790b.tar.bz2 |
Update aosp/master LLVM for rebase to r230699.
Change-Id: I2b5be30509658cb8266be782de0ab24f9099f9b9
Diffstat (limited to 'test/CodeGen/R600/tti-unroll-prefs.ll')
-rw-r--r-- | test/CodeGen/R600/tti-unroll-prefs.ll | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/test/CodeGen/R600/tti-unroll-prefs.ll b/test/CodeGen/R600/tti-unroll-prefs.ll new file mode 100644 index 0000000..0009c42 --- /dev/null +++ b/test/CodeGen/R600/tti-unroll-prefs.ll @@ -0,0 +1,58 @@ +; RUN: opt -loop-unroll -S -mtriple=amdgcn-- -mcpu=SI %s | FileCheck %s + +; This IR comes from this OpenCL C code: +; +; if (b + 4 > a) { +; for (int i = 0; i < 4; i++, b++) { +; if (b + 1 <= a) +; *(dst + c + b) = 0; +; else +; break; +; } +; } +; +; This test is meant to check that this loop isn't unrolled into more than +; four iterations. The loop unrolling preferences we currently use cause this +; loop to not be unrolled at all, but that may change in the future. + +; CHECK-LABEL: @test +; CHECK: store i8 0, i8 addrspace(1)* +; CHECK-NOT: store i8 0, i8 addrspace(1)* +; CHECK: ret void +define void @test(i8 addrspace(1)* nocapture %dst, i32 %a, i32 %b, i32 %c) { +entry: + %add = add nsw i32 %b, 4 + %cmp = icmp sgt i32 %add, %a + br i1 %cmp, label %for.cond.preheader, label %if.end7 + +for.cond.preheader: ; preds = %entry + %cmp313 = icmp slt i32 %b, %a + br i1 %cmp313, label %if.then4.lr.ph, label %if.end7.loopexit + +if.then4.lr.ph: ; preds = %for.cond.preheader + %0 = sext i32 %c to i64 + br label %if.then4 + +if.then4: ; preds = %if.then4.lr.ph, %if.then4 + %i.015 = phi i32 [ 0, %if.then4.lr.ph ], [ %inc, %if.then4 ] + %b.addr.014 = phi i32 [ %b, %if.then4.lr.ph ], [ %add2, %if.then4 ] + %add2 = add nsw i32 %b.addr.014, 1 + %1 = sext i32 %b.addr.014 to i64 + %add.ptr.sum = add nsw i64 %1, %0 + %add.ptr5 = getelementptr inbounds i8 addrspace(1)* %dst, i64 %add.ptr.sum + store i8 0, i8 addrspace(1)* %add.ptr5, align 1 + %inc = add nsw i32 %i.015, 1 + %cmp1 = icmp slt i32 %inc, 4 + %cmp3 = icmp slt i32 %add2, %a + %or.cond = and i1 %cmp3, %cmp1 + br i1 %or.cond, label %if.then4, label %for.cond.if.end7.loopexit_crit_edge + +for.cond.if.end7.loopexit_crit_edge: ; preds = %if.then4 + br label %if.end7.loopexit + +if.end7.loopexit: ; preds = %for.cond.if.end7.loopexit_crit_edge, %for.cond.preheader + br label %if.end7 + +if.end7: ; preds = %if.end7.loopexit, %entry + ret void +} |