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| author | Daniel Jasper <djasper@google.com> | 2015-04-14 15:20:37 +0000 |
|---|---|---|
| committer | Daniel Jasper <djasper@google.com> | 2015-04-14 15:20:37 +0000 |
| commit | 8229ebb9263fb1a773ea48c632bc1e04ce6e1299 (patch) | |
| tree | c71d7be567534f99f2eba546ebabc18ed2522b18 /llvm/test/CodeGen | |
| parent | 2f16bc10957acf1e29306bc764cb4886d38024a9 (diff) | |
| download | bcm5719-llvm-8229ebb9263fb1a773ea48c632bc1e04ce6e1299.tar.gz bcm5719-llvm-8229ebb9263fb1a773ea48c632bc1e04ce6e1299.zip | |
The code that originally made me discover this is:
if ((a & 0x1) == 0x1) {
..
}
In this case we don't actually have any branch probability information and
should not assume to have any. LLVM transforms this into:
%and = and i32 %a, 1
%tobool = icmp eq i32 %and, 0
So, in this case, the result of a bitwise and is compared against 0,
but nevertheless, we should not assume to have probability
information.
llvm-svn: 234898
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/arm64-call-tailcalls.ll | 2 | ||||
| -rw-r--r-- | llvm/test/CodeGen/Mips/octeon.ll | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/llvm/test/CodeGen/AArch64/arm64-call-tailcalls.ll b/llvm/test/CodeGen/AArch64/arm64-call-tailcalls.ll index 71d932787ce..6621db25da5 100644 --- a/llvm/test/CodeGen/AArch64/arm64-call-tailcalls.ll +++ b/llvm/test/CodeGen/AArch64/arm64-call-tailcalls.ll @@ -53,9 +53,9 @@ bb: ; preds = %entry define i32 @t8(i32 %x) nounwind ssp { ; CHECK-LABEL: t8: +; CHECK: b _c ; CHECK: b _a ; CHECK: b _b -; CHECK: b _c %and = and i32 %x, 1 %tobool = icmp eq i32 %and, 0 br i1 %tobool, label %if.end, label %if.then diff --git a/llvm/test/CodeGen/Mips/octeon.ll b/llvm/test/CodeGen/Mips/octeon.ll index 97e12e721f5..499ce3c1ddb 100644 --- a/llvm/test/CodeGen/Mips/octeon.ll +++ b/llvm/test/CodeGen/Mips/octeon.ll @@ -93,7 +93,7 @@ entry: ; ALL-LABEL: bbit0: ; OCTEON: bbit0 $4, 3, $[[BB0:BB[0-9_]+]] ; MIPS64: andi $[[T0:[0-9]+]], $4, 8 -; MIPS64: beqz $[[T0]], $[[BB0:BB[0-9_]+]] +; MIPS64: bnez $[[T0]], $[[BB0:BB[0-9_]+]] %bit = and i64 %a, 8 %res = icmp eq i64 %bit, 0 br i1 %res, label %endif, label %if @@ -111,7 +111,7 @@ entry: ; MIPS64: daddiu $[[T0:[0-9]+]], $zero, 1 ; MIPS64: dsll $[[T1:[0-9]+]], $[[T0]], 35 ; MIPS64: and $[[T2:[0-9]+]], $4, $[[T1]] -; MIPS64: beqz $[[T2]], $[[BB0:BB[0-9_]+]] +; MIPS64: bnez $[[T2]], $[[BB0:BB[0-9_]+]] %bit = and i64 %a, 34359738368 %res = icmp eq i64 %bit, 0 br i1 %res, label %endif, label %if |
