xref: /llvm-project/llvm/test/CodeGen/PowerPC/mul-const.ll (revision 86e3abc9e63e01675cb37919c55419f5c190d90e)
11445b77eSZi Xuan Wu; RUN: llc -verify-machineinstrs -mcpu=pwr8 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s -mtriple=ppc64-- | FileCheck %s -check-prefixes=PWR8-CHECK,CHECK
21445b77eSZi Xuan Wu; RUN: llc -verify-machineinstrs -mcpu=pwr9 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s -mtriple=ppc64le-- | FileCheck %s -check-prefixes=PWR9-CHECK,CHECK
31445b77eSZi Xuan Wu
41445b77eSZi Xuan Wudefine i32 @test1(i32 %a) {
51445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, 16         ; <i32> [#uses=1]
61445b77eSZi Xuan Wu        ret i32 %tmp.1
71445b77eSZi Xuan Wu}
81445b77eSZi Xuan Wu; CHECK-LABEL: test1:
91445b77eSZi Xuan Wu; CHECK-NOT: mul
101445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 4
111445b77eSZi Xuan Wu
121445b77eSZi Xuan Wudefine i32 @test2(i32 %a) {
131445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, 17         ; <i32> [#uses=1]
141445b77eSZi Xuan Wu        ret i32 %tmp.1
151445b77eSZi Xuan Wu}
161445b77eSZi Xuan Wu; CHECK-LABEL: test2:
171445b77eSZi Xuan Wu; CHECK-NOT: mul
181445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 4
191445b77eSZi Xuan Wu; CHECK-NEXT: add r[[REG2:[0-9]+]], r3, r[[REG1]]
201445b77eSZi Xuan Wu
211445b77eSZi Xuan Wudefine i32 @test3(i32 %a) {
221445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, 15         ; <i32> [#uses=1]
231445b77eSZi Xuan Wu        ret i32 %tmp.1
241445b77eSZi Xuan Wu}
251445b77eSZi Xuan Wu; CHECK-LABEL: test3:
261445b77eSZi Xuan Wu; CHECK-NOT: mul
271445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 4
28*86e3abc9SKang Zhang; CHECK-NEXT: sub r[[REG2:[0-9]+]], r[[REG1]], r3
291445b77eSZi Xuan Wu
301445b77eSZi Xuan Wu; negtive constant
311445b77eSZi Xuan Wu
321445b77eSZi Xuan Wudefine i32 @test4(i32 %a) {
331445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, -16         ; <i32> [#uses=1]
341445b77eSZi Xuan Wu        ret i32 %tmp.1
351445b77eSZi Xuan Wu}
361445b77eSZi Xuan Wu; CHECK-LABEL: test4:
371445b77eSZi Xuan Wu; CHECK-NOT: mul
381445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 4
391445b77eSZi Xuan Wu; CHECK-NEXT: neg r[[REG2:[0-9]+]], r[[REG1]]
401445b77eSZi Xuan Wu
411445b77eSZi Xuan Wudefine i32 @test5(i32 %a) {
421445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, -17         ; <i32> [#uses=1]
431445b77eSZi Xuan Wu        ret i32 %tmp.1
441445b77eSZi Xuan Wu}
451445b77eSZi Xuan Wu; CHECK-LABEL: test5:
461445b77eSZi Xuan Wu; PWR9-CHECK: mulli r[[REG1:[0-9]+]], r3, -17
471445b77eSZi Xuan Wu; PWR8-CHECK-NOT: mul
481445b77eSZi Xuan Wu; PWR8-CHECK: slwi r[[REG1:[0-9]+]], r3, 4
491445b77eSZi Xuan Wu; PWR8-CHECK-NEXT: add r[[REG2:[0-9]+]], r3, r[[REG1]]
501445b77eSZi Xuan Wu; PWR8-CHECK-NEXT: neg r{{[0-9]+}}, r[[REG2]]
511445b77eSZi Xuan Wu
521445b77eSZi Xuan Wudefine i32 @test6(i32 %a) {
531445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, -15         ; <i32> [#uses=1]
541445b77eSZi Xuan Wu        ret i32 %tmp.1
551445b77eSZi Xuan Wu}
561445b77eSZi Xuan Wu; CHECK-LABEL: test6:
571445b77eSZi Xuan Wu; CHECK-NOT: mul
581445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 4
59*86e3abc9SKang Zhang; CHECK-NEXT: sub r[[REG2:[0-9]+]], r3, r[[REG1]]
601445b77eSZi Xuan Wu; CHECK-NOT: neg
611445b77eSZi Xuan Wu
621445b77eSZi Xuan Wu; boundary case
631445b77eSZi Xuan Wu
641445b77eSZi Xuan Wudefine i32 @test7(i32 %a) {
651445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, -2147483648 ; <i32> [#uses=1]
661445b77eSZi Xuan Wu        ret i32 %tmp.1
671445b77eSZi Xuan Wu}
681445b77eSZi Xuan Wu; CHECK-LABEL: test7:
691445b77eSZi Xuan Wu; CHECK-NOT: mul
701445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 31
711445b77eSZi Xuan Wu
721445b77eSZi Xuan Wudefine i32 @test8(i32 %a) {
731445b77eSZi Xuan Wu        %tmp.1 = mul nsw i32 %a, 2147483647 ; <i32> [#uses=1]
741445b77eSZi Xuan Wu        ret i32 %tmp.1
751445b77eSZi Xuan Wu}
761445b77eSZi Xuan Wu; CHECK-LABEL: test8:
771445b77eSZi Xuan Wu; CHECK-NOT: mul
781445b77eSZi Xuan Wu; CHECK: slwi r[[REG1:[0-9]+]], r3, 31
79*86e3abc9SKang Zhang; CHECK-NEXT: sub r[[REG2:[0-9]+]], r[[REG1]], r3
80