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| author | Florian Hahn <florian.hahn@arm.com> | 2018-03-23 11:56:00 +0000 |
|---|---|---|
| committer | Florian Hahn <florian.hahn@arm.com> | 2018-03-23 11:56:00 +0000 |
| commit | b1feec087e92db0b5a984396e11e996fba3b9594 (patch) | |
| tree | c7679bb84171b589e2e1a9717549c9b1bfeb1b71 /llvm/test/Transforms/SCCP | |
| parent | b5088da452d82a11e9f0f518df100e440d7266d6 (diff) | |
| download | bcm5719-llvm-b1feec087e92db0b5a984396e11e996fba3b9594.tar.gz bcm5719-llvm-b1feec087e92db0b5a984396e11e996fba3b9594.zip | |
[IPSCCP] Use constant range information for comparisons of parameters.
For comparisons with parameters, we can use the ParamState lattice
elements which also provide constant range information. This improves
the code for PR33253 further and gets us closer to use
ValueLatticeElement for all values.
Also, as we are using the range information in the solver directly, we
do not need tryToReplaceWithConstantRange afterwards anymore.
Reviewers: dberlin, mssimpso, davide, efriedma
Reviewed By: mssimpso
Differential Revision: https://reviews.llvm.org/D43762
llvm-svn: 328307
Diffstat (limited to 'llvm/test/Transforms/SCCP')
| -rw-r--r-- | llvm/test/Transforms/SCCP/ip-constant-ranges.ll | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/llvm/test/Transforms/SCCP/ip-constant-ranges.ll b/llvm/test/Transforms/SCCP/ip-constant-ranges.ll index 22a239d1208..d5a3e208adf 100644 --- a/llvm/test/Transforms/SCCP/ip-constant-ranges.ll +++ b/llvm/test/Transforms/SCCP/ip-constant-ranges.ll @@ -2,11 +2,7 @@ ; Constant range for %a is [1, 48) and for %b is [301, 1000) ; CHECK-LABEL: f1 -; CHECK-NOT: icmp -; CHECK: %a.1 = select i1 false, i32 1, i32 2 -; CHECK: %b.1 = select i1 true, i32 1, i32 2 -; CHECK: %a.2 = select i1 false, i32 1, i32 2 -; CHECK: %b.2 = select i1 true, i32 1, i32 2 +; CHECK: ret i32 undef define internal i32 @f1(i32 %a, i32 %b) { entry: %cmp.a = icmp sgt i32 %a, 300 @@ -28,10 +24,11 @@ entry: ; CHECK-LABEL: f2 ; CHECK: %cmp = icmp sgt i32 %x, 300 ; CHECK: %res1 = select i1 %cmp, i32 1, i32 2 -; CHECK-NEXT: %res2 = select i1 true, i32 3, i32 4 -; CHECK-NEXT: %res3 = select i1 true, i32 5, i32 6 ; CHECK-NEXT: %res4 = select i1 %cmp4, i32 3, i32 4 -; CHECK-NEXT: %res5 = select i1 true, i32 5, i32 6 +; CHECK-NEXT: %res6 = add i32 %res1, 3 +; CHECK-NEXT: %res7 = add i32 5, %res4 +; CHECK-NEXT: %res = add i32 %res6, 5 +; CHECK-NEXT: ret i32 %res define internal i32 @f2(i32 %x) { entry: %cmp = icmp sgt i32 %x, 300 @@ -57,8 +54,7 @@ entry: %call2 = tail call i32 @f1(i32 47, i32 999) %call3 = tail call i32 @f2(i32 47) %call4 = tail call i32 @f2(i32 301) - %res = add nsw i32 %call1, %call2 - %res.1 = add nsw i32 %res, %call3 + %res.1 = add nsw i32 12, %call3 %res.2 = add nsw i32 %res.1, %call4 ret i32 %res.2 } @@ -145,9 +141,9 @@ define double @test_struct({ double, double } %test) { ; Constant range for %x is [47, 302) ; CHECK-LABEL: @f5 ; CHECK-NEXT: entry: -; CHECK-NEXT: %res1 = select i1 undef, i32 1, i32 2 -; CHECK-NEXT: %res2 = select i1 undef, i32 3, i32 4 -; CHECK-NEXT: %res = add i32 %res1, %res2 +; CHECK-NEXT: %cmp = icmp sgt i32 %x, undef +; CHECK-NEXT: %res1 = select i1 %cmp, i32 1, i32 2 +; CHECK-NEXT: %res = add i32 %res1, 3 ; CHECK-NEXT: ret i32 %res define internal i32 @f5(i32 %x) { entry: |
