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author | Stephen Hines <srhines@google.com> | 2014-04-23 16:57:46 -0700 |
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committer | Stephen Hines <srhines@google.com> | 2014-04-24 15:53:16 -0700 |
commit | 36b56886974eae4f9c5ebc96befd3e7bfe5de338 (patch) | |
tree | e6cfb69fbbd937f450eeb83bfb83b9da3b01275a /test/Transforms/LICM/sinking.ll | |
parent | 69a8640022b04415ae9fac62f8ab090601d8f889 (diff) | |
download | external_llvm-36b56886974eae4f9c5ebc96befd3e7bfe5de338.zip external_llvm-36b56886974eae4f9c5ebc96befd3e7bfe5de338.tar.gz external_llvm-36b56886974eae4f9c5ebc96befd3e7bfe5de338.tar.bz2 |
Update to LLVM 3.5a.
Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617
Diffstat (limited to 'test/Transforms/LICM/sinking.ll')
-rw-r--r-- | test/Transforms/LICM/sinking.ll | 104 |
1 files changed, 87 insertions, 17 deletions
diff --git a/test/Transforms/LICM/sinking.ll b/test/Transforms/LICM/sinking.ll index b503f96..ccc9186 100644 --- a/test/Transforms/LICM/sinking.ll +++ b/test/Transforms/LICM/sinking.ll @@ -53,7 +53,7 @@ Exit: ; CHECK-LABEL: @test3( ; CHECK: Exit.loopexit: -; CHECK-NEXT: %X = add i32 0, 1 +; CHECK-NEXT: %X.le = add i32 0, 1 ; CHECK-NEXT: br label %Exit } @@ -76,8 +76,9 @@ Out: ; preds = %Loop ret i32 %tmp.7 ; CHECK-LABEL: @test4( ; CHECK: Out: -; CHECK-NEXT: mul i32 %N, %N_addr.0.pn -; CHECK-NEXT: sub i32 %tmp.6, %N +; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %N_addr.0.pn +; CHECK-NEXT: mul i32 %N, %[[LCSSAPHI]] +; CHECK-NEXT: sub i32 %tmp.6.le, %N ; CHECK-NEXT: ret i32 } @@ -100,8 +101,8 @@ Out: ; preds = %Loop ret i32 %tmp.6 ; CHECK-LABEL: @test5( ; CHECK: Out: -; CHECK-NEXT: %tmp.6 = load i32* @X -; CHECK-NEXT: ret i32 %tmp.6 +; CHECK-NEXT: %tmp.6.le = load i32* @X +; CHECK-NEXT: ret i32 %tmp.6.le } @@ -124,9 +125,9 @@ Out: ; preds = %Loop ret i32 %sunk2 ; CHECK-LABEL: @test6( ; CHECK: Out: -; CHECK-NEXT: %dead = getelementptr %Ty* @X2, i64 0, i32 0 -; CHECK-NEXT: %sunk2 = load i32* %dead -; CHECK-NEXT: ret i32 %sunk2 +; CHECK-NEXT: %dead.le = getelementptr %Ty* @X2, i64 0, i32 0 +; CHECK-NEXT: %sunk2.le = load i32* %dead.le +; CHECK-NEXT: ret i32 %sunk2.le } @@ -152,12 +153,14 @@ Out2: ; preds = %ContLoop ret i32 %tmp.7 ; CHECK-LABEL: @test7( ; CHECK: Out1: -; CHECK-NEXT: mul i32 %N, %N_addr.0.pn -; CHECK-NEXT: sub i32 %tmp.6, %N +; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %N_addr.0.pn +; CHECK-NEXT: mul i32 %N, %[[LCSSAPHI]] +; CHECK-NEXT: sub i32 %tmp.6.le, %N ; CHECK-NEXT: ret ; CHECK: Out2: -; CHECK-NEXT: mul i32 %N, %N_addr.0.pn -; CHECK-NEXT: sub i32 %tmp.6 +; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %N_addr.0.pn +; CHECK-NEXT: mul i32 %N, %[[LCSSAPHI]] +; CHECK-NEXT: sub i32 %tmp.6.le4, %N ; CHECK-NEXT: ret } @@ -183,8 +186,9 @@ exit2: ; preds = %Cont ; CHECK: exit1: ; CHECK-NEXT: ret i32 0 ; CHECK: exit2: -; CHECK-NEXT: %V = add i32 %X, 1 -; CHECK-NEXT: ret i32 %V +; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %X +; CHECK-NEXT: %V.le = add i32 %[[LCSSAPHI]], 1 +; CHECK-NEXT: ret i32 %V.le } @@ -208,7 +212,7 @@ return.i: ; preds = %no_exit.1.i ; CHECK-LABEL: @test9( ; CHECK: loopentry.3.i.preheader.loopexit: -; CHECK-NEXT: %inc.1.i = add i32 0, 1 +; CHECK-NEXT: %inc.1.i.le = add i32 0, 1 ; CHECK-NEXT: br label %loopentry.3.i.preheader } @@ -229,8 +233,9 @@ Out: ; preds = %Loop ; CHECK-LABEL: @test10( ; CHECK: Out: -; CHECK-NEXT: %tmp.6 = sdiv i32 %N, %N_addr.0.pn -; CHECK-NEXT: ret i32 %tmp.6 +; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i32 [ %N_addr.0.pn +; CHECK-NEXT: %tmp.6.le = sdiv i32 %N, %[[LCSSAPHI]] +; CHECK-NEXT: ret i32 %tmp.6.le } ; Should delete, not sink, dead instructions. @@ -246,4 +251,69 @@ Out: ; CHECK-NEXT: ret void } +@c = common global [1 x i32] zeroinitializer, align 4 +; Test a *many* way nested loop with multiple exit blocks both of which exit +; multiple loop nests. This exercises LCSSA corner cases. +define i32 @PR18753(i1* %a, i1* %b, i1* %c, i1* %d) { +entry: + br label %l1.header + +l1.header: + %iv = phi i64 [ %iv.next, %l1.latch ], [ 0, %entry ] + %arrayidx.i = getelementptr inbounds [1 x i32]* @c, i64 0, i64 %iv + br label %l2.header + +l2.header: + %x0 = load i1* %c, align 4 + br i1 %x0, label %l1.latch, label %l3.preheader + +l3.preheader: + br label %l3.header + +l3.header: + %x1 = load i1* %d, align 4 + br i1 %x1, label %l2.latch, label %l4.preheader + +l4.preheader: + br label %l4.header + +l4.header: + %x2 = load i1* %a + br i1 %x2, label %l3.latch, label %l4.body + +l4.body: + call void @f(i32* %arrayidx.i) + %x3 = load i1* %b + %l = trunc i64 %iv to i32 + br i1 %x3, label %l4.latch, label %exit + +l4.latch: + call void @g() + %x4 = load i1* %b, align 4 + br i1 %x4, label %l4.header, label %exit + +l3.latch: + br label %l3.header + +l2.latch: + br label %l2.header + +l1.latch: + %iv.next = add nsw i64 %iv, 1 + br label %l1.header + +exit: + %lcssa = phi i32 [ %l, %l4.latch ], [ %l, %l4.body ] +; CHECK-LABEL: @PR18753( +; CHECK: exit: +; CHECK-NEXT: %[[LCSSAPHI:.*]] = phi i64 [ %iv, %l4.latch ], [ %iv, %l4.body ] +; CHECK-NEXT: %l.le = trunc i64 %[[LCSSAPHI]] to i32 +; CHECK-NEXT: ret i32 %l.le + + ret i32 %lcssa +} + +declare void @f(i32*) + +declare void @g() |