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| ; RUN: llc -verify-machineinstrs -print-before=peephole-opt -print-after=peephole-opt -mtriple=powerpc64-unknown-linux-gnu -o /dev/null 2>&1 < %s | FileCheck %s
; RUN: llc -verify-machineinstrs -print-before=peephole-opt -print-after=peephole-opt -mtriple=powerpc64le-unknown-linux-gnu -o /dev/null 2>&1 < %s | FileCheck %s
; CHECK-LABEL: fn1
define signext i32 @fn1(i32 %baz) {
%1 = mul nsw i32 %baz, 208
%2 = zext i32 %1 to i64
%3 = shl i64 %2, 48
%4 = ashr exact i64 %3, 48
; CHECK: ANDIo8 killed {{[^,]+}}, 65520, implicit-def dead $cr0
; CHECK: CMPLDI
; CHECK: BCC
; CHECK: ANDIo8 {{[^,]+}}, 65520, implicit-def $cr0
; CHECK: COPY $cr0
; CHECK: BCC
%5 = icmp eq i64 %4, 0
br i1 %5, label %foo, label %bar
foo:
ret i32 1
bar:
ret i32 0
}
; CHECK-LABEL: fn2
define signext i32 @fn2(i64 %a, i64 %b) {
; CHECK: OR8o {{[^, ]+}}, {{[^, ]+}}, implicit-def $cr0
; CHECK: [[CREG:[^, ]+]]:crrc = COPY killed $cr
; CHECK: BCC 12, killed [[CREG]]
%1 = or i64 %b, %a
%2 = icmp sgt i64 %1, -1
br i1 %2, label %foo, label %bar
foo:
ret i32 1
bar:
ret i32 0
}
; CHECK-LABEL: fn3
define signext i32 @fn3(i32 %a) {
; CHECK: ANDIo killed {{[%0-9]+}}{{[^,]*}}, 10, implicit-def $cr0
; CHECK: [[CREG:[^, ]+]]:crrc = COPY $cr0
; CHECK: BCC 76, killed [[CREG]]
%1 = and i32 %a, 10
%2 = icmp ne i32 %1, 0
br i1 %2, label %foo, label %bar
foo:
ret i32 1
bar:
ret i32 0
}
; This test case confirms that a record-form instruction is
; generated even if the branch has a static branch hint.
; CHECK-LABEL: fn4
define i64 @fn4(i64 %a, i64 %b) {
; CHECK: ADD8o
; CHECK-NOT: CMP
; CHECK: BCC 71
entry:
%add = add nsw i64 %b, %a
%cmp = icmp eq i64 %add, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @exit(i32 signext 0) #3
unreachable
if.end:
ret i64 %add
}
declare void @exit(i32 signext)
; Since %v1 and %v2 are zero-extended 32-bit values, %1 is also zero-extended.
; In this case, we want to use ORo instead of OR + CMPLWI.
; CHECK-LABEL: fn5
define zeroext i32 @fn5(i32* %p1, i32* %p2) {
; CHECK: ORo
; CHECK-NOT: CMP
; CHECK: BCC
%v1 = load i32, i32* %p1
%v2 = load i32, i32* %p2
%1 = or i32 %v1, %v2
%2 = icmp eq i32 %1, 0
br i1 %2, label %foo, label %bar
foo:
ret i32 1
bar:
ret i32 0
}
; This test confirms record-form instructions are emitted for comparison
; against a non-zero value.
; CHECK-LABEL: fn6
define i8* @fn6(i8* readonly %p) {
; CHECK: LBZU
; CHECK: EXTSBo
; CHECK-NOT: CMP
; CHECK: BCC
; CHECK: LBZU
; CHECK: EXTSBo
; CHECK-NOT: CMP
; CHECK: BCC
entry:
%incdec.ptr = getelementptr inbounds i8, i8* %p, i64 -1
%0 = load i8, i8* %incdec.ptr
%cmp = icmp sgt i8 %0, -1
br i1 %cmp, label %out, label %if.end
if.end:
%incdec.ptr2 = getelementptr inbounds i8, i8* %p, i64 -2
%1 = load i8, i8* %incdec.ptr2
%cmp4 = icmp sgt i8 %1, -1
br i1 %cmp4, label %out, label %cleanup
out:
%p.addr.0 = phi i8* [ %incdec.ptr, %entry ], [ %incdec.ptr2, %if.end ]
br label %cleanup
cleanup:
%retval.0 = phi i8* [ %p.addr.0, %out ], [ null, %if.end ]
ret i8* %retval.0
}
|